Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

31 files changed, 3634 insertions, 0 deletions

diff --git a/setup_native/source/win32/customactions/indexingfilter/instooofiltmsi.def b/setup_native/source/win32/customactions/indexingfilter/instooofiltmsi.def
new file mode 100644
index 0000000000..0126556a48
--- /dev/null
+++ b/setup_native/source/win32/customactions/indexingfilter/instooofiltmsi.def
@@ -0,0 +1,3 @@
+LIBRARY		"instooofiltmsi.dll"
+EXPORTS
+			RestartIndexingService
\ No newline at end of file
diff --git a/setup_native/source/win32/customactions/indexingfilter/restartindexingservice.cxx b/setup_native/source/win32/customactions/indexingfilter/restartindexingservice.cxx
new file mode 100644
index 0000000000..e1c26501b0
--- /dev/null
+++ b/setup_native/source/win32/customactions/indexingfilter/restartindexingservice.cxx
@@ -0,0 +1,157 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+/*
+    After installation of the OOo filter for the indexing service
+    it is necessary to restart the indexing service in order to
+    activate the filter. This is the most reliable way to get the
+    indexing service working. We only restart the service if it is
+    already running. If we have insufficient privileges to restart
+    the service we do nothing.
+*/
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <msiquery.h>
+
+const wchar_t * const INDEXING_SERVICE_NAME = L"cisvc";
+
+static bool StopIndexingService(SC_HANDLE hService)
+{
+    SERVICE_STATUS status;
+
+    if (ControlService(hService, SERVICE_CONTROL_STOP, &status))
+    {
+        // Check the status until the service is no longer stop pending.
+        if (QueryServiceStatus(hService, &status))
+        {
+            DWORD startTime = GetTickCount();
+            DWORD oldCheckPoint = status.dwCheckPoint;
+
+            while (status.dwCurrentState == SERVICE_STOP_PENDING)
+            {
+                // Do not wait longer than the wait hint. A good interval is
+                // one tenth the wait hint, but no less than 1 second and no
+                // more than 10 seconds.
+                DWORD waitTime = status.dwWaitHint / 10;
+
+                if (waitTime < 1000)
+                    waitTime = 1000;
+                else if (waitTime > 10000)
+                    waitTime = 10000;
+
+                Sleep(waitTime);
+
+                // Check the status again.
+                if (!QueryServiceStatus(hService, &status) ||
+                    (status.dwCurrentState == SERVICE_STOPPED))
+                    break;
+
+                if (status.dwCheckPoint > oldCheckPoint)
+                {
+                    startTime = GetTickCount();
+                    oldCheckPoint = status.dwCheckPoint;
+                }
+                else if ((GetTickCount() - startTime) > status.dwWaitHint)
+                {
+                    break; // service doesn't react anymore
+                }
+            }
+        }
+    }
+    return (status.dwCurrentState == SERVICE_STOPPED);
+}
+
+static void StartIndexingService(SC_HANDLE hService)
+{
+    if (StartServiceW(hService, 0, nullptr))
+    {
+        SERVICE_STATUS status;
+
+        // Check the status until the service is no longer stop pending.
+        if (QueryServiceStatus(hService, &status))
+        {
+            DWORD startTime = GetTickCount();
+            DWORD oldCheckPoint = status.dwCheckPoint;
+
+            while (status.dwCurrentState == SERVICE_START_PENDING)
+            {
+                // Do not wait longer than the wait hint. A good interval is
+                // one tenth the wait hint, but no less than 1 second and no
+                // more than 10 seconds.
+                DWORD waitTime = status.dwWaitHint / 10;
+
+                if (waitTime < 1000)
+                    waitTime = 1000;
+                else if (waitTime > 10000)
+                    waitTime = 10000;
+
+                Sleep(waitTime);
+
+                // Check the status again.
+                if (!QueryServiceStatus(hService, &status) ||
+                    (status.dwCurrentState == SERVICE_STOPPED))
+                    break;
+
+                if (status.dwCheckPoint > oldCheckPoint)
+                {
+                    startTime = GetTickCount();
+                    oldCheckPoint = status.dwCheckPoint;
+                }
+                else if ((GetTickCount() - startTime) > status.dwWaitHint)
+                {
+                    // service doesn't react anymore
+                    break;
+                }
+            }
+        }
+    }
+}
+
+extern "C" __declspec(dllexport) UINT __stdcall RestartIndexingService(MSIHANDLE)
+{
+    SC_HANDLE hSCManager = OpenSCManagerW(
+        nullptr, // local machine
+        nullptr, // ServicesActive database
+        SC_MANAGER_ALL_ACCESS);
+
+    if (hSCManager != nullptr)
+    {
+        SC_HANDLE hIndexingService = OpenServiceW(
+            hSCManager, INDEXING_SERVICE_NAME, SERVICE_QUERY_STATUS | SERVICE_START | SERVICE_STOP);
+
+        if (hIndexingService)
+        {
+            SERVICE_STATUS status;
+            ZeroMemory(&status, sizeof(status));
+
+            if (QueryServiceStatus(hIndexingService, &status) &&
+                (status.dwCurrentState == SERVICE_RUNNING))
+            {
+                if (StopIndexingService(hIndexingService))
+                    StartIndexingService(hIndexingService);
+            }
+            CloseServiceHandle(hIndexingService);
+        }
+        CloseServiceHandle(hSCManager);
+    }
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/inst_msu/inst_msu.cxx b/setup_native/source/win32/customactions/inst_msu/inst_msu.cxx
new file mode 100644
index 0000000000..8adffbba62
--- /dev/null
+++ b/setup_native/source/win32/customactions/inst_msu/inst_msu.cxx
@@ -0,0 +1,678 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <memory>
+#include <string>
+#include <sstream>
+#include <iomanip>
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <Shlobj.h>
+#include <Wuerror.h>
+#include <msiquery.h>
+
+namespace
+{
+template <typename IntType> std::string Num2Hex(IntType n)
+{
+    std::stringstream sMsg;
+    sMsg << "0x" << std::uppercase << std::setfill('0') << std::setw(sizeof(n) * 2) << std::hex
+         << n;
+    return sMsg.str();
+}
+
+template <typename IntType> std::string Num2Dec(IntType n)
+{
+    std::stringstream sMsg;
+    sMsg << n;
+    return sMsg.str();
+}
+
+std::string Win32ErrorMessage(const char* sFunc, DWORD nWin32Error)
+{
+    std::stringstream sMsg;
+    sMsg << sFunc << " failed with Win32 error code " << Num2Hex(nWin32Error) << "!";
+
+    return sMsg.str();
+}
+
+void ThrowHResult(const char* sFunc, HRESULT hr)
+{
+    std::stringstream sMsg;
+    sMsg << sFunc << " failed (HRESULT = " << Num2Hex(hr) << ")!";
+
+    throw std::exception(sMsg.str().c_str());
+}
+
+void CheckHResult(const char* sFunc, HRESULT hr)
+{
+    if (FAILED(hr))
+        ThrowHResult(sFunc, hr);
+}
+
+void ThrowWin32Error(const char* sFunc, DWORD nWin32Error)
+{
+    throw std::exception(Win32ErrorMessage(sFunc, nWin32Error).c_str());
+}
+
+void ThrowLastError(const char* sFunc) { ThrowWin32Error(sFunc, GetLastError()); }
+
+void CheckWin32Error(const char* sFunc, DWORD nWin32Error)
+{
+    if (nWin32Error != ERROR_SUCCESS)
+        ThrowWin32Error(sFunc, nWin32Error);
+}
+
+std::wstring GetKnownFolder(const KNOWNFOLDERID& rfid)
+{
+    PWSTR sPath = nullptr;
+    HRESULT hr = SHGetKnownFolderPath(rfid, KF_FLAG_DEFAULT, nullptr, &sPath);
+    CheckHResult("SHGetKnownFolderPath", hr);
+    std::wstring sResult(sPath);
+    CoTaskMemFree(sPath);
+    return sResult;
+}
+
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRecord, std::ostringstream& sTmpl, UINT)
+{
+    MsiRecordSetStringA(hRecord, 0, sTmpl.str().c_str());
+    MsiProcessMessage(hInst, INSTALLMESSAGE_INFO, hRecord);
+}
+
+void RecSetString(MSIHANDLE hRec, UINT nField, LPCSTR sVal)
+{
+    MsiRecordSetStringA(hRec, nField, sVal);
+}
+
+void RecSetString(MSIHANDLE hRec, UINT nField, LPCWSTR sVal)
+{
+    MsiRecordSetStringW(hRec, nField, sVal);
+}
+
+template <class S1, class... SOther>
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRec, std::ostringstream& sTmpl, UINT nField,
+                  const S1& elem, const SOther&... others);
+
+template <class Ch, class... SOther>
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRec, std::ostringstream& sTmpl, UINT nField,
+                  const Ch* elem, const SOther&... others)
+{
+    sTmpl << " [" << nField << "]";
+    RecSetString(hRec, nField, elem);
+    WriteLogElem(hInst, hRec, sTmpl, nField + 1, others...);
+}
+
+template <class S1, class... SOther>
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRec, std::ostringstream& sTmpl, UINT nField,
+                  const S1& elem, const SOther&... others)
+{
+    WriteLogElem(hInst, hRec, sTmpl, nField, elem.c_str(), others...);
+}
+
+std::string sLogPrefix;
+
+template <class... StrType> void WriteLog(MSIHANDLE hInst, const StrType&... elements)
+{
+    PMSIHANDLE hRec = MsiCreateRecord(sizeof...(elements));
+    if (!hRec)
+        return;
+
+    std::ostringstream sTemplate;
+    sTemplate << sLogPrefix;
+    WriteLogElem(hInst, hRec, sTemplate, 1, elements...);
+}
+
+// Show a warning message box. This will be automatically suppressed in unattended installation.
+void ShowWarning(MSIHANDLE hInst, const std::wstring& sKBNo, const char* sMessage)
+{
+    // Error table's message #25000: "Installing a pre-requisite [2] failed.
+    // You might need to manually install it from Microsoft site to be able to run the product.[3]"
+    PMSIHANDLE hRec = MsiCreateRecord(3);
+    // To show a message from Error table, record's Field 0 must be null
+    MsiRecordSetInteger(hRec, 1, 25000);
+    MsiRecordSetStringW(hRec, 2, sKBNo.c_str());
+    std::string s("\n");
+    s += sMessage;
+    MsiRecordSetStringA(hRec, 3, s.c_str());
+    MsiProcessMessage(hInst, INSTALLMESSAGE_WARNING, hRec);
+}
+
+// Set custom action description visible in progress dialog
+void SetStatusText(MSIHANDLE hInst, const std::wstring& actName, const std::wstring& actDesc)
+{
+    PMSIHANDLE hRec = MsiCreateRecord(3);
+    // For INSTALLMESSAGE_ACTIONSTART, record's Field 0 must be null
+    // Field 1: Action name - must be non-null
+    MsiRecordSetStringW(hRec, 1, actName.c_str());
+    // Field 2: Action description - displayed in dialog
+    MsiRecordSetStringW(hRec, 2, actDesc.c_str());
+    // Let Field 3 stay null - no action template
+    MsiProcessMessage(hInst, INSTALLMESSAGE_ACTIONSTART, hRec);
+}
+
+typedef std::unique_ptr<void, decltype(&CloseHandle)> CloseHandleGuard;
+CloseHandleGuard Guard(HANDLE h) { return CloseHandleGuard(h, CloseHandle); }
+
+typedef std::unique_ptr<const wchar_t, decltype(&DeleteFileW)> DeleteFileGuard;
+DeleteFileGuard Guard(const wchar_t* sFileName) { return DeleteFileGuard(sFileName, DeleteFileW); }
+
+typedef std::unique_ptr<SC_HANDLE__, decltype(&CloseServiceHandle)> CloseServiceHandleGuard;
+CloseServiceHandleGuard Guard(SC_HANDLE h)
+{
+    return CloseServiceHandleGuard(h, CloseServiceHandle);
+}
+
+std::wstring GetTempFile()
+{
+    wchar_t sPath[MAX_PATH + 1];
+    DWORD nResult = GetTempPathW(sizeof(sPath) / sizeof(*sPath), sPath);
+    if (!nResult)
+        ThrowLastError("GetTempPathW");
+
+    wchar_t sFile[MAX_PATH + 1];
+    nResult = GetTempFileNameW(sPath, L"TMP", 0, sFile);
+    if (!nResult)
+        ThrowLastError("GetTempFileNameW");
+    return sFile;
+}
+
+bool IsWow64Process()
+{
+#if !defined _WIN64
+    BOOL bResult = FALSE;
+    typedef BOOL(WINAPI * LPFN_ISWOW64PROCESS)(HANDLE, PBOOL);
+    LPFN_ISWOW64PROCESS fnIsWow64Process = reinterpret_cast<LPFN_ISWOW64PROCESS>(
+        GetProcAddress(GetModuleHandleW(L"kernel32"), "IsWow64Process"));
+
+    if (fnIsWow64Process)
+    {
+        if (!fnIsWow64Process(GetCurrentProcess(), &bResult))
+            ThrowLastError("IsWow64Process");
+    }
+
+    return bResult;
+#else
+    return false;
+#endif
+}
+
+// This class uses MsiProcessMessage to check for user input: it returns IDCANCEL when user cancels
+// installation. It throws a special exception, to be intercepted in main action function to return
+// corresponding exit code.
+class UserInputChecker
+{
+public:
+    class eUserCancelled
+    {
+    };
+
+    UserInputChecker(MSIHANDLE hInstall)
+        : m_hInstall(hInstall)
+        , m_hProgressRec(MsiCreateRecord(3))
+    {
+        // Use explicit progress messages
+        MsiRecordSetInteger(m_hProgressRec, 1, 1);
+        MsiRecordSetInteger(m_hProgressRec, 2, 1);
+        MsiRecordSetInteger(m_hProgressRec, 3, 0);
+        int nResult = MsiProcessMessage(m_hInstall, INSTALLMESSAGE_PROGRESS, m_hProgressRec);
+        if (nResult == IDCANCEL)
+            throw eUserCancelled();
+        // Prepare the record to following progress update calls
+        MsiRecordSetInteger(m_hProgressRec, 1, 2);
+        MsiRecordSetInteger(m_hProgressRec, 2, 0); // step by 0 - don't move progress
+        MsiRecordSetInteger(m_hProgressRec, 3, 0);
+    }
+
+    void ThrowIfUserCancelled()
+    {
+        // Check if user has cancelled
+        int nResult = MsiProcessMessage(m_hInstall, INSTALLMESSAGE_PROGRESS, m_hProgressRec);
+        if (nResult == IDCANCEL)
+            throw eUserCancelled();
+    }
+
+private:
+    MSIHANDLE m_hInstall;
+    PMSIHANDLE m_hProgressRec;
+};
+
+// Checks if Windows Update service is disabled, and if it is, enables it temporarily.
+// Also stops the service if it's currently running, because it seems that wusa.exe
+// does not freeze when it starts the service itself.
+class WUServiceEnabler
+{
+public:
+    WUServiceEnabler(MSIHANDLE hInstall)
+        : mhInstall(hInstall)
+        , mhService(EnableWUService(hInstall))
+    {
+    }
+
+    ~WUServiceEnabler()
+    {
+        try
+        {
+            if (mhService)
+            {
+                EnsureServiceEnabled(mhInstall, mhService.get(), false);
+                StopService(mhInstall, mhService.get(), false);
+            }
+        }
+        catch (std::exception& e)
+        {
+            WriteLog(mhInstall, e.what());
+        }
+    }
+
+private:
+    static CloseServiceHandleGuard EnableWUService(MSIHANDLE hInstall)
+    {
+        auto hSCM = Guard(OpenSCManagerW(nullptr, nullptr, SC_MANAGER_ALL_ACCESS));
+        if (!hSCM)
+            ThrowLastError("OpenSCManagerW");
+        WriteLog(hInstall, "Opened service control manager");
+
+        auto hService = Guard(OpenServiceW(hSCM.get(), L"wuauserv",
+                                           SERVICE_QUERY_CONFIG | SERVICE_CHANGE_CONFIG
+                                               | SERVICE_QUERY_STATUS | SERVICE_STOP));
+        if (!hService)
+            ThrowLastError("OpenServiceW");
+        WriteLog(hInstall, "Obtained WU service handle");
+
+        const DWORD nCurrentStatus = ServiceStatus(hInstall, hService.get());
+        // Stop currently running service to prevent wusa.exe from hanging trying to detect if the
+        // update is applicable (sometimes this freezes it ~indefinitely; it seems that it doesn't
+        // happen if wusa.exe starts the service itself: https://superuser.com/questions/1044528/).
+        // tdf#124794: Wait for service to stop.
+        if (nCurrentStatus == SERVICE_RUNNING)
+            StopService(hInstall, hService.get(), true);
+
+        if (nCurrentStatus == SERVICE_RUNNING
+            || !EnsureServiceEnabled(hInstall, hService.get(), true))
+        {
+            // No need to restore anything back, since we didn't change config
+            hService.reset();
+            WriteLog(hInstall, "Service configuration is unchanged");
+        }
+
+        return hService;
+    }
+
+    // Returns if the service configuration was actually changed
+    static bool EnsureServiceEnabled(MSIHANDLE hInstall, SC_HANDLE hService, bool bEnabled)
+    {
+        bool bConfigChanged = false;
+
+        DWORD nCbRequired = 0;
+        if (!QueryServiceConfigW(hService, nullptr, 0, &nCbRequired))
+        {
+            if (DWORD nError = GetLastError(); nError != ERROR_INSUFFICIENT_BUFFER)
+                ThrowWin32Error("QueryServiceConfigW", nError);
+        }
+        std::unique_ptr<char[]> pBuf(new char[nCbRequired]);
+        LPQUERY_SERVICE_CONFIGW pConfig = reinterpret_cast<LPQUERY_SERVICE_CONFIGW>(pBuf.get());
+        if (!QueryServiceConfigW(hService, pConfig, nCbRequired, &nCbRequired))
+            ThrowLastError("QueryServiceConfigW");
+        WriteLog(hInstall, "Obtained service config");
+
+        DWORD eNewStartType = 0;
+        if (bEnabled && pConfig->dwStartType == SERVICE_DISABLED)
+        {
+            bConfigChanged = true;
+            eNewStartType = SERVICE_DEMAND_START;
+            WriteLog(hInstall, "Service is disabled, and requested to enable");
+        }
+        else if (!bEnabled && pConfig->dwStartType != SERVICE_DISABLED)
+        {
+            bConfigChanged = true;
+            eNewStartType = SERVICE_DISABLED;
+            WriteLog(hInstall, "Service is enabled, and requested to disable");
+        }
+
+        if (bConfigChanged)
+        {
+            if (!ChangeServiceConfigW(hService, SERVICE_NO_CHANGE, eNewStartType, SERVICE_NO_CHANGE,
+                                      nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
+                                      nullptr))
+                ThrowLastError("ChangeServiceConfigW");
+            WriteLog(hInstall, "WU service config successfully changed");
+        }
+        else
+            WriteLog(hInstall, "No need to modify service config");
+
+        return bConfigChanged;
+    }
+
+    static DWORD ServiceStatus(MSIHANDLE hInstall, SC_HANDLE hService)
+    {
+        SERVICE_STATUS aServiceStatus{};
+        if (!QueryServiceStatus(hService, &aServiceStatus))
+            ThrowLastError("QueryServiceStatus");
+
+        std::string sStatus;
+        switch (aServiceStatus.dwCurrentState)
+        {
+            case SERVICE_STOPPED:
+                sStatus = "SERVICE_STOPPED";
+                break;
+            case SERVICE_START_PENDING:
+                sStatus = "SERVICE_START_PENDING";
+                break;
+            case SERVICE_STOP_PENDING:
+                sStatus = "SERVICE_STOP_PENDING";
+                break;
+            case SERVICE_RUNNING:
+                sStatus = "SERVICE_RUNNING";
+                break;
+            case SERVICE_CONTINUE_PENDING:
+                sStatus = "SERVICE_CONTINUE_PENDING";
+                break;
+            case SERVICE_PAUSE_PENDING:
+                sStatus = "SERVICE_PAUSE_PENDING";
+                break;
+            case SERVICE_PAUSED:
+                sStatus = "SERVICE_PAUSED";
+                break;
+            default:
+                sStatus = Num2Hex(aServiceStatus.dwCurrentState);
+        }
+        WriteLog(hInstall, "Service status is", sStatus);
+
+        return aServiceStatus.dwCurrentState;
+    }
+
+    static void StopService(MSIHANDLE hInstall, SC_HANDLE hService, bool bWait)
+    {
+        try
+        {
+            if (ServiceStatus(hInstall, hService) != SERVICE_STOPPED)
+            {
+                SERVICE_STATUS aServiceStatus{};
+                if (!ControlService(hService, SERVICE_CONTROL_STOP, &aServiceStatus))
+                    ThrowLastError("ControlService");
+                WriteLog(hInstall,
+                         "Successfully sent SERVICE_CONTROL_STOP code to Windows Update service");
+                if (aServiceStatus.dwCurrentState != SERVICE_STOPPED && bWait)
+                {
+                    // Let user cancel too long wait
+                    UserInputChecker aInputChecker(hInstall);
+                    // aServiceStatus.dwWaitHint is unreasonably high for Windows Update (30000),
+                    // so don't use it, but simply poll service status each second
+                    for (int nWait = 0; nWait < 30; ++nWait) // arbitrary limit of 30 s
+                    {
+                        for (int i = 0; i < 2; ++i) // check user input twice a second
+                        {
+                            Sleep(500);
+                            aInputChecker.ThrowIfUserCancelled();
+                        }
+
+                        if (!QueryServiceStatus(hService, &aServiceStatus))
+                            ThrowLastError("QueryServiceStatus");
+
+                        if (aServiceStatus.dwCurrentState == SERVICE_STOPPED)
+                            break;
+                    }
+                }
+                if (aServiceStatus.dwCurrentState == SERVICE_STOPPED)
+                    WriteLog(hInstall, "Successfully stopped Windows Update service");
+                else if (bWait)
+                    WriteLog(hInstall, "Wait for Windows Update stop timed out - proceeding");
+            }
+            else
+                WriteLog(hInstall, "Windows Update service is not running");
+        }
+        catch (std::exception& e)
+        {
+            WriteLog(hInstall, e.what());
+        }
+    }
+
+    MSIHANDLE mhInstall;
+    CloseServiceHandleGuard mhService;
+};
+}
+
+// Immediate action "unpack_msu" that has access to installation database and properties; checks
+// "InstMSUBinary" property and unpacks the binary with that name to a temporary file; sets
+// "cleanup_msu" and "inst_msu" properties to the full name of the extracted temporary file. These
+// properties will become "CustomActionData" property inside relevant deferred actions.
+extern "C" __declspec(dllexport) UINT __stdcall UnpackMSUForInstall(MSIHANDLE hInstall)
+{
+    try
+    {
+        sLogPrefix = "UnpackMSUForInstall:";
+        WriteLog(hInstall, "started");
+
+        WriteLog(hInstall, "Checking value of InstMSUBinary");
+        wchar_t sInstMSUBinary[MAX_PATH + 10];
+        DWORD nCCh = sizeof(sInstMSUBinary) / sizeof(*sInstMSUBinary);
+        CheckWin32Error("MsiGetPropertyW",
+                        MsiGetPropertyW(hInstall, L"InstMSUBinary", sInstMSUBinary, &nCCh));
+        WriteLog(hInstall, "Got InstMSUBinary value:",
+                 sInstMSUBinary); // KB2999226|Windows61-KB2999226-x64msu
+        const wchar_t* sBinaryName = wcschr(sInstMSUBinary, L'|');
+        if (!sBinaryName)
+            throw std::exception("No KB number in InstMSUBinary!");
+        // "KB2999226"
+        const std::wstring sKBNo(sInstMSUBinary, sBinaryName - sInstMSUBinary);
+        ++sBinaryName;
+
+        PMSIHANDLE hDatabase = MsiGetActiveDatabase(hInstall);
+        if (!hDatabase)
+            ThrowLastError("MsiGetActiveDatabase");
+        WriteLog(hInstall, "MsiGetActiveDatabase succeeded");
+
+        std::wstringstream sQuery;
+        sQuery << "SELECT `Data` FROM `Binary` WHERE `Name`='" << sBinaryName << "'";
+
+        PMSIHANDLE hBinaryView;
+        CheckWin32Error("MsiDatabaseOpenViewW",
+                        MsiDatabaseOpenViewW(hDatabase, sQuery.str().c_str(), &hBinaryView));
+        WriteLog(hInstall, "MsiDatabaseOpenViewW succeeded");
+
+        CheckWin32Error("MsiViewExecute", MsiViewExecute(hBinaryView, 0));
+        WriteLog(hInstall, "MsiViewExecute succeeded");
+
+        PMSIHANDLE hBinaryRecord;
+        CheckWin32Error("MsiViewFetch", MsiViewFetch(hBinaryView, &hBinaryRecord));
+        WriteLog(hInstall, "MsiViewFetch succeeded");
+
+        const std::wstring sBinary = GetTempFile();
+        auto aDeleteFileGuard(Guard(sBinary.c_str()));
+        WriteLog(hInstall, "Temp file path:", sBinary.c_str());
+
+        CheckWin32Error("MsiSetPropertyW",
+                        MsiSetPropertyW(hInstall, L"cleanup_msu", sBinary.c_str()));
+
+        {
+            HANDLE hFile = CreateFileW(sBinary.c_str(), GENERIC_WRITE, 0, nullptr, CREATE_ALWAYS,
+                                       FILE_ATTRIBUTE_NORMAL, nullptr);
+            if (hFile == INVALID_HANDLE_VALUE)
+                ThrowLastError("CreateFileW");
+            auto aFileHandleGuard(Guard(hFile));
+
+            const DWORD nBufSize = 1024 * 1024;
+            std::unique_ptr<char[]> buf(new char[nBufSize]);
+            DWORD nTotal = 0;
+            DWORD nRead;
+            do
+            {
+                nRead = nBufSize;
+                CheckWin32Error("MsiRecordReadStream",
+                                MsiRecordReadStream(hBinaryRecord, 1, buf.get(), &nRead));
+
+                if (nRead > 0)
+                {
+                    DWORD nWritten;
+                    if (!WriteFile(hFile, buf.get(), nRead, &nWritten, nullptr))
+                        ThrowLastError("WriteFile");
+                    nTotal += nWritten;
+                }
+            } while (nRead == nBufSize);
+
+            WriteLog(hInstall, "Successfully wrote", Num2Dec(nTotal), "bytes");
+        }
+        const std::wstring s_inst_msu = sKBNo + L"|" + sBinary;
+        CheckWin32Error("MsiSetPropertyW",
+                        MsiSetPropertyW(hInstall, L"inst_msu", s_inst_msu.c_str()));
+
+        // Don't delete the file: it will be done by following actions (inst_msu or cleanup_msu)
+        (void)aDeleteFileGuard.release();
+        return ERROR_SUCCESS;
+    }
+    catch (std::exception& e)
+    {
+        WriteLog(hInstall, e.what());
+    }
+    return ERROR_INSTALL_FAILURE;
+}
+
+// Deferred action "inst_msu" that must be run from system account. Receives the tempfile name from
+// "CustomActionData" property, and runs wusa.exe to install it. Waits for it and checks exit code.
+extern "C" __declspec(dllexport) UINT __stdcall InstallMSU(MSIHANDLE hInstall)
+{
+    std::wstring sKBNo; // "KB2999226"
+    try
+    {
+        sLogPrefix = "InstallMSU:";
+        WriteLog(hInstall, "started");
+
+        WriteLog(hInstall, "Checking value of CustomActionData");
+        wchar_t sCustomActionData[MAX_PATH + 10]; // "KB2999226|C:\Temp\binary.tmp"
+        DWORD nCCh = sizeof(sCustomActionData) / sizeof(*sCustomActionData);
+        CheckWin32Error("MsiGetPropertyW",
+                        MsiGetPropertyW(hInstall, L"CustomActionData", sCustomActionData, &nCCh));
+        WriteLog(hInstall, "Got CustomActionData value:", sCustomActionData);
+        const wchar_t* sBinaryName = wcschr(sCustomActionData, L'|');
+        if (!sBinaryName)
+            throw std::exception("No KB number in CustomActionData!");
+        sKBNo = std::wstring(sCustomActionData, sBinaryName - sCustomActionData);
+        ++sBinaryName;
+        auto aDeleteFileGuard(Guard(sBinaryName));
+
+        SetStatusText(hInstall, L"WU service state check",
+                      L"Checking Windows Update service state");
+
+        // In case the Windows Update service is disabled, we temporarily enable it here. We also
+        // stop running WU service, to avoid wusa.exe freeze (see comment in EnableWUService).
+        WUServiceEnabler aWUServiceEnabler(hInstall);
+
+        SetStatusText(hInstall, sKBNo + L" installation", L"Installing " + sKBNo);
+
+        const bool bWow64Process = IsWow64Process();
+        WriteLog(hInstall, "Is Wow64 Process:", bWow64Process ? "YES" : "NO");
+        std::wstring sWUSAPath = bWow64Process ? GetKnownFolder(FOLDERID_Windows) + L"\\SysNative"
+                                               : GetKnownFolder(FOLDERID_System);
+        sWUSAPath += L"\\wusa.exe";
+        WriteLog(hInstall, "Prepared wusa path:", sWUSAPath);
+
+        std::wstring sWUSACmd
+            = L"\"" + sWUSAPath + L"\" \"" + sBinaryName + L"\" /quiet /norestart";
+        WriteLog(hInstall, "Prepared wusa command:", sWUSACmd);
+
+        STARTUPINFOW si{};
+        si.cb = sizeof(si);
+        PROCESS_INFORMATION pi{};
+        if (!CreateProcessW(sWUSAPath.c_str(), const_cast<LPWSTR>(sWUSACmd.c_str()), nullptr,
+                            nullptr, FALSE, CREATE_NO_WINDOW, nullptr, nullptr, &si, &pi))
+            ThrowLastError("CreateProcessW");
+        CloseHandle(pi.hThread);
+        auto aCloseProcHandleGuard(Guard(pi.hProcess));
+        WriteLog(hInstall, "CreateProcessW succeeded");
+
+        {
+            // This block waits when the started wusa.exe process finishes. Since it's possible
+            // for wusa.exe in some circumstances to wait really long (indefinitely?), we check
+            // for user input here.
+            UserInputChecker aInputChecker(hInstall);
+            for (;;)
+            {
+                DWORD nWaitResult = WaitForSingleObject(pi.hProcess, 500);
+                if (nWaitResult == WAIT_OBJECT_0)
+                    break; // wusa.exe finished
+                else if (nWaitResult == WAIT_TIMEOUT)
+                    aInputChecker.ThrowIfUserCancelled();
+                else
+                    ThrowWin32Error("WaitForSingleObject", nWaitResult);
+            }
+        }
+
+        DWORD nExitCode = 0;
+        if (!GetExitCodeProcess(pi.hProcess, &nExitCode))
+            ThrowLastError("GetExitCodeProcess");
+
+        HRESULT hr = static_cast<HRESULT>(nExitCode);
+
+        // HRESULT_FROM_WIN32 is defined as an inline function in SDK 8.1 without the constexpr
+        // And it won't work to place it inside the switch statement.
+        if (HRESULT_FROM_WIN32(ERROR_SUCCESS_REBOOT_REQUIRED) == hr)
+        {
+            hr = ERROR_SUCCESS_REBOOT_REQUIRED;
+        }
+
+        switch (hr)
+        {
+            case S_OK:
+            case WU_S_ALREADY_INSTALLED:
+            case WU_E_NOT_APPLICABLE: // Windows could lie us about its version, etc.
+            case ERROR_SUCCESS_REBOOT_REQUIRED:
+            case WU_S_REBOOT_REQUIRED:
+                WriteLog(hInstall, "wusa.exe succeeded with exit code", Num2Hex(nExitCode));
+                return ERROR_SUCCESS;
+
+            default:
+                ThrowHResult("Execution of wusa.exe", hr);
+        }
+    }
+    catch (const UserInputChecker::eUserCancelled&)
+    {
+        return ERROR_INSTALL_USEREXIT;
+    }
+    catch (std::exception& e)
+    {
+        WriteLog(hInstall, e.what());
+        ShowWarning(hInstall, sKBNo, e.what());
+    }
+    return ERROR_SUCCESS; // Do not break on MSU installation errors
+}
+
+// Rollback deferred action "cleanup_msu" that is executed on error or cancel.
+// It removes the temporary file created by UnpackMSUForInstall action.
+// MUST be placed IMMEDIATELY AFTER "unpack_msu" in execute sequence.
+extern "C" __declspec(dllexport) UINT __stdcall CleanupMSU(MSIHANDLE hInstall)
+{
+    try
+    {
+        sLogPrefix = "CleanupMSU:";
+        WriteLog(hInstall, "started");
+
+        WriteLog(hInstall, "Checking value of CustomActionData");
+        wchar_t sBinaryName[MAX_PATH + 1];
+        DWORD nCCh = sizeof(sBinaryName) / sizeof(*sBinaryName);
+        CheckWin32Error("MsiGetPropertyW",
+                        MsiGetPropertyW(hInstall, L"CustomActionData", sBinaryName, &nCCh));
+        WriteLog(hInstall, "Got CustomActionData value:", sBinaryName);
+
+        if (!DeleteFileW(sBinaryName))
+        {
+            if (DWORD nError = GetLastError(); nError != ERROR_FILE_NOT_FOUND)
+                ThrowWin32Error("DeleteFileW", nError);
+        }
+        WriteLog(hInstall, "File successfully removed");
+    }
+    catch (std::exception& e)
+    {
+        WriteLog(hInstall, e.what());
+    }
+    // Always return success - we don't want rollback to fail.
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/inst_msu/inst_msu_msi.def b/setup_native/source/win32/customactions/inst_msu/inst_msu_msi.def
new file mode 100644
index 0000000000..49ade9c016
--- /dev/null
+++ b/setup_native/source/win32/customactions/inst_msu/inst_msu_msi.def
@@ -0,0 +1,5 @@
+LIBRARY		"inst_msu_msi.dll"
+EXPORTS
+			UnpackMSUForInstall
+			InstallMSU
+			CleanupMSU
\ No newline at end of file
diff --git a/setup_native/source/win32/customactions/quickstarter/qslnkmsi.def b/setup_native/source/win32/customactions/quickstarter/qslnkmsi.def
new file mode 100644
index 0000000000..f50a3a3968
--- /dev/null
+++ b/setup_native/source/win32/customactions/quickstarter/qslnkmsi.def
@@ -0,0 +1,3 @@
+LIBRARY		"qslnkmsi.dll"
+EXPORTS
+			RemoveQuickstarterLink
\ No newline at end of file
diff --git a/setup_native/source/win32/customactions/quickstarter/quickstarter.cxx b/setup_native/source/win32/customactions/quickstarter/quickstarter.cxx
new file mode 100644
index 0000000000..960274f393
--- /dev/null
+++ b/setup_native/source/win32/customactions/quickstarter/quickstarter.cxx
@@ -0,0 +1,131 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "quickstarter.hxx"
+
+#include <psapi.h>
+
+#include <malloc.h>
+
+std::wstring GetOfficeInstallationPathW(MSIHANDLE handle)
+{
+    std::wstring progpath;
+    DWORD sz = 0;
+    PWSTR dummy = const_cast<PWSTR>(L"");
+
+    if (MsiGetPropertyW(handle, L"INSTALLLOCATION", dummy, &sz) == ERROR_MORE_DATA)
+    {
+        sz++; // space for the final '\0'
+        DWORD nbytes = sz * sizeof(WCHAR);
+        PWSTR buff = static_cast<PWSTR>(_alloca(nbytes));
+        ZeroMemory(buff, nbytes);
+        MsiGetPropertyW(handle, L"INSTALLLOCATION", buff, &sz);
+        progpath = buff;
+    }
+    return progpath;
+}
+
+std::wstring GetOfficeProductNameW(MSIHANDLE handle)
+{
+    std::wstring productname;
+    DWORD sz = 0;
+    PWSTR dummy = const_cast<PWSTR>(L"");
+
+    if (MsiGetPropertyW(handle, L"ProductName", dummy, &sz) == ERROR_MORE_DATA)
+    {
+        sz++; // space for the final '\0'
+        DWORD nbytes = sz * sizeof(WCHAR);
+        PWSTR buff = static_cast<PWSTR>(_alloca(nbytes));
+        ZeroMemory(buff, nbytes);
+        MsiGetPropertyW(handle, L"ProductName", buff, &sz);
+        productname = buff;
+    }
+    return productname;
+}
+
+std::wstring GetQuickstarterLinkNameW(MSIHANDLE handle)
+{
+    std::wstring quickstarterlinkname;
+    DWORD sz = 0;
+    PWSTR dummy = const_cast<PWSTR>(L"");
+
+    if (MsiGetPropertyW(handle, L"Quickstarterlinkname", dummy, &sz) == ERROR_MORE_DATA)
+    {
+        sz++; // space for the final '\0'
+        DWORD nbytes = sz * sizeof(WCHAR);
+        PWSTR buff = static_cast<PWSTR>(_alloca(nbytes));
+        ZeroMemory(buff, nbytes);
+        MsiGetPropertyW(handle, L"Quickstarterlinkname", buff, &sz);
+        quickstarterlinkname = buff;
+    }
+    else if (MsiGetPropertyW(handle, L"ProductName", dummy, &sz) == ERROR_MORE_DATA)
+    {
+        sz++; // space for the final '\0'
+        DWORD nbytes = sz * sizeof(WCHAR);
+        PWSTR buff = static_cast<PWSTR>(_alloca(nbytes));
+        ZeroMemory(buff, nbytes);
+        MsiGetPropertyW(handle, L"ProductName", buff, &sz);
+        quickstarterlinkname = buff;
+    }
+    return quickstarterlinkname;
+}
+
+static bool IsValidHandle( HANDLE handle )
+{
+    return nullptr != handle && INVALID_HANDLE_VALUE != handle;
+}
+
+static DWORD WINAPI GetModuleFileNameExW_( HANDLE hProcess, HMODULE hModule, PWSTR lpFileName, DWORD nSize )
+{
+    static auto lpProc = []() {
+        HMODULE hLibrary = LoadLibraryW(L"PSAPI.DLL");
+        decltype(GetModuleFileNameExW)* pRet = nullptr;
+        if (hLibrary)
+            pRet = reinterpret_cast<decltype(GetModuleFileNameExW)*>(
+                GetProcAddress(hLibrary, "GetModuleFileNameExW"));
+        return pRet;
+    }();
+
+    if ( lpProc )
+        return lpProc( hProcess, hModule, lpFileName, nSize );
+
+    return 0;
+
+}
+
+std::wstring GetProcessImagePathW( DWORD dwProcessId )
+{
+    std::wstring sImagePath;
+
+    HANDLE  hProcess = OpenProcess( PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, dwProcessId );
+
+    if ( IsValidHandle( hProcess ) )
+    {
+        WCHAR szPathBuffer[MAX_PATH] = L"";
+
+        if ( GetModuleFileNameExW_( hProcess, nullptr, szPathBuffer, sizeof(szPathBuffer)/sizeof(szPathBuffer[0]) ) )
+            sImagePath = szPathBuffer;
+
+        CloseHandle( hProcess );
+    }
+
+    return sImagePath;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/quickstarter/quickstarter.hxx b/setup_native/source/win32/customactions/quickstarter/quickstarter.hxx
new file mode 100644
index 0000000000..2370f46918
--- /dev/null
+++ b/setup_native/source/win32/customactions/quickstarter/quickstarter.hxx
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SETUP_NATIVE_SOURCE_WIN32_CUSTOMACTIONS_QUICKSTARTER_QUICKSTARTER_HXX
+#define INCLUDED_SETUP_NATIVE_SOURCE_WIN32_CUSTOMACTIONS_QUICKSTARTER_QUICKSTARTER_HXX
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <msiquery.h>
+
+#include <string>
+
+std::wstring GetOfficeInstallationPathW(MSIHANDLE handle);
+std::wstring GetOfficeProductNameW(MSIHANDLE handle);
+std::wstring GetQuickstarterLinkNameW(MSIHANDLE handle);
+std::wstring GetProcessImagePathW(DWORD dwProcessId);
+
+#endif // INCLUDED_SETUP_NATIVE_SOURCE_WIN32_CUSTOMACTIONS_QUICKSTARTER_QUICKSTARTER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/quickstarter/remove_quickstart_link.cxx b/setup_native/source/win32/customactions/quickstarter/remove_quickstart_link.cxx
new file mode 100644
index 0000000000..c600329ee6
--- /dev/null
+++ b/setup_native/source/win32/customactions/quickstarter/remove_quickstart_link.cxx
@@ -0,0 +1,42 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "quickstarter.hxx"
+
+#include <shlobj.h>
+
+extern "C" __declspec(dllexport) UINT __stdcall RemoveQuickstarterLink(MSIHANDLE hMSI)
+{
+    WCHAR szStartupPath[MAX_PATH];
+
+    if (SHGetSpecialFolderPathW(nullptr, szStartupPath, CSIDL_STARTUP, FALSE))
+    {
+        std::wstring sQuickstartLinkPath = szStartupPath;
+
+        sQuickstartLinkPath += L"\\";
+        sQuickstartLinkPath += GetQuickstarterLinkNameW(hMSI);
+        sQuickstartLinkPath += L".lnk";
+
+        DeleteFileW(sQuickstartLinkPath.c_str());
+    }
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/quickstarter/sdqsmsi.def b/setup_native/source/win32/customactions/quickstarter/sdqsmsi.def
new file mode 100644
index 0000000000..c8df896e57
--- /dev/null
+++ b/setup_native/source/win32/customactions/quickstarter/sdqsmsi.def
@@ -0,0 +1,3 @@
+LIBRARY		"sdqsmsi.dll"
+EXPORTS
+			ShutDownQuickstarter
\ No newline at end of file
diff --git a/setup_native/source/win32/customactions/quickstarter/shutdown_quickstart.cxx b/setup_native/source/win32/customactions/quickstarter/shutdown_quickstart.cxx
new file mode 100644
index 0000000000..c93b000e4b
--- /dev/null
+++ b/setup_native/source/win32/customactions/quickstarter/shutdown_quickstart.cxx
@@ -0,0 +1,73 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "quickstarter.hxx"
+
+#include <systools/win32/qswin32.h>
+
+static BOOL CALLBACK EnumWindowsProc( HWND hWnd, LPARAM lParam )
+{
+    MSIHANDLE   hMSI = static_cast< MSIHANDLE >( lParam );
+    WCHAR szClassName[sizeof(QUICKSTART_CLASSNAME)/sizeof(WCHAR) + 1];
+
+    int nCharsCopied = GetClassNameW( hWnd, szClassName, sizeof(szClassName)/sizeof(szClassName[0]) );
+
+    if ( nCharsCopied && !_wcsicmp( QUICKSTART_CLASSNAME, szClassName ) )
+    {
+        DWORD   dwProcessId;
+
+        if ( GetWindowThreadProcessId( hWnd, &dwProcessId ) )
+        {
+            std::wstring sImagePath = GetProcessImagePathW( dwProcessId );
+            std::wstring sOfficeImageDir = GetOfficeInstallationPathW( hMSI ) + L"program\\";
+
+            if ( !_wcsnicmp( sImagePath.c_str(), sOfficeImageDir.c_str(), sOfficeImageDir.length() ) )
+            {
+                UINT uMsgShutdownQuickstart = RegisterWindowMessageW( SHUTDOWN_QUICKSTART_MESSAGE );
+
+                if ( uMsgShutdownQuickstart )
+                    SendMessageW( hWnd, uMsgShutdownQuickstart, 0, 0 );
+
+
+                HANDLE  hProcess = OpenProcess( SYNCHRONIZE, FALSE, dwProcessId );
+
+                if ( hProcess )
+                {
+                    WaitForSingleObject( hProcess, 30000 ); // Wait at most 30 seconds for process to terminate
+                    CloseHandle( hProcess );
+                }
+
+                return FALSE;
+            }
+
+        }
+    }
+
+    return TRUE;
+}
+
+
+extern "C" __declspec(dllexport) UINT __stdcall ShutDownQuickstarter( MSIHANDLE hMSI )
+{
+    EnumWindows( EnumWindowsProc, hMSI );
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsdoc.def b/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsdoc.def
new file mode 100644
index 0000000000..cea8b46995
--- /dev/null
+++ b/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsdoc.def
@@ -0,0 +1,6 @@
+LIBRARY		"reg4allmsdoc.dll"
+EXPORTS
+			FindRegisteredExtensions
+			LookForRegisteredExtensions
+			RegisterSomeExtensions
+			RestoreRegAllMSDoc 
\ No newline at end of file
diff --git a/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsi.cxx b/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsi.cxx
new file mode 100644
index 0000000000..70ba1cc524
--- /dev/null
+++ b/setup_native/source/win32/customactions/reg4allmsdoc/reg4allmsi.cxx
@@ -0,0 +1,519 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <msiquery.h>
+
+#include <malloc.h>
+#include <string>
+#include <strsafe.h>
+
+static const WCHAR* g_Extensions[] =
+{
+    L".doc",     // Microsoft Word Text [0]
+    L".dot",     // Microsoft Word Template
+    L".wps",     // Kingsoft Writer Document
+    L".wpt",     // Kingsoft Writer Template
+    L".rtf",     // rtf text
+    L".docx",    // Office Word 2007 XML document
+    L".docm",    // Office Word 2007 XML macro-enabled document
+    L".dotx",    // Office Word 2007 XML template
+    L".dotm",    // Office Word 2007 XML macro-enabled template
+    L".xlw",     // Microsoft Excel
+    L".xls",     // Microsoft Excel
+    L".xlt",     // Microsoft Excel Template
+    L".xlsx",    // Office Excel 2007 XML workbook
+    L".xlsm",    // Office Excel 2007 XML macro-enabled workbook
+    L".xltx",    // Office Excel 2007 XML template
+    L".xltm",    // Office Excel 2007 XML macro-enabled template
+    L".xlsb",    // Office Excel 2007 binary workbook (BIFF12)
+    L".iqy",     // Microsoft Excel Web Query File
+    L".et",      // Kingsoft Spreadsheet
+    L".ett",     // Kingsoft SpreadSheet Template
+    L".ppt",     // Microsoft Powerpoint
+    L".pps",     // Microsoft Powerpoint
+    L".pot",     // Microsoft Powerpoint Template
+    L".pptx",    // Office PowerPoint 2007 XML presentation
+    L".pptm",    // Office PowerPoint 2007 macro-enabled XML presentation
+    L".potx",    // Office PowerPoint 2007 XML template
+    L".potm",    // Office PowerPoint 2007 macro-enabled XML template
+    L".ppsx",    // Office PowerPoint 2007 XML show
+    L".dps",     // Kingsoft Presentation
+    L".dpt",     // Kingsoft Presentation Template
+    L".vsd",     // Visio 2000/XP/2003 document
+    L".vst",     // Visio 2000/XP/2003 template
+    nullptr
+};
+
+const int WORD_START = 0;
+const int EXCEL_START = 9;
+const int POWERPOINT_START = 20;
+const int VISIO_START = 30;
+const int VISIO_END = 32;
+
+//    ".xlam",    // Office Excel 2007 XML macro-enabled add-in
+//    ".ppam",    // Office PowerPoint 2007 macro-enabled XML add-in
+//    ".ppsm",    // Office PowerPoint 2007 macro-enabled XML show
+
+#ifdef DEBUG
+inline void OutputDebugStringFormatW( LPCWSTR pFormat, ... )
+{
+    WCHAR    buffer[1024];
+    va_list args;
+
+    va_start( args, pFormat );
+    StringCchVPrintfW( buffer, sizeof(buffer)/sizeof(*buffer), pFormat, args );
+    OutputDebugStringW( buffer );
+    va_end(args);
+}
+#else
+static void OutputDebugStringFormatW( LPCWSTR, ... )
+{
+}
+#endif
+
+static bool CheckExtensionInRegistry( LPCWSTR lpSubKey )
+{
+    bool    bRet = false;
+    HKEY    hKey = nullptr;
+    LONG    lResult = RegOpenKeyExW( HKEY_CLASSES_ROOT, lpSubKey, 0, KEY_QUERY_VALUE, &hKey );
+
+    if ( ERROR_SUCCESS == lResult )
+    {
+        WCHAR szBuffer[1024];
+        DWORD nSize = sizeof( szBuffer );
+
+        lResult = RegQueryValueExW( hKey, L"", nullptr, nullptr, reinterpret_cast<LPBYTE>(szBuffer), &nSize );
+        if ( ERROR_SUCCESS == lResult && nSize > 0 )
+        {
+            szBuffer[nSize/sizeof(*szBuffer)] = L'\0';
+            OutputDebugStringFormatW( L"Found value [%s] for key [%s].\n", szBuffer, lpSubKey );
+
+            if ( wcsncmp( szBuffer, L"WordPad.Document.1", 18 ) == 0 )
+            {   // We will replace registration for WordPad (alas, on XP only) FIXME
+                bRet = true;
+            }
+            else if ( wcsncmp( szBuffer, L"LibreOffice.", 12 ) == 0 )
+            {   // We will replace registration for our own types, too
+                bRet = true;
+            }
+            else if ( wcsncmp( szBuffer, L"lostub.", 7 ) == 0 )
+            {   // We will replace registration for lostub, too
+                bRet = true;
+            }
+            else // we have a default value -> do not register, see fdo#39791
+                bRet = false;
+        }
+        else    // no default value found -> return TRUE to register for that key
+            bRet = true;
+
+        RegCloseKey( hKey );
+    }
+    else // no key found -> return TRUE to register for that key
+        bRet = true;
+
+    return bRet;
+}
+
+static bool GetMsiPropW( MSIHANDLE handle, LPCWSTR name, /*out*/std::wstring& value )
+{
+    DWORD sz = 0;
+    LPWSTR dummy = const_cast<LPWSTR>(L"");
+    if (MsiGetPropertyW(handle, name, dummy, &sz) == ERROR_MORE_DATA)
+    {
+        sz++;
+        DWORD nbytes = sz * sizeof(WCHAR);
+        LPWSTR buff = static_cast<LPWSTR>(_alloca(nbytes));
+        ZeroMemory(buff, nbytes);
+        MsiGetPropertyW(handle, name, buff, &sz);
+        value = buff;
+        return true;
+    }
+    return false;
+}
+
+static bool IsSetMsiPropW( MSIHANDLE handle, LPCWSTR name )
+{
+    std::wstring val;
+    GetMsiPropW( handle, name, val );
+    return (val == L"1");
+}
+
+static void registerForExtension( MSIHANDLE handle, const int nIndex, bool bRegister )
+{
+    WCHAR sPropName[256];
+    StringCchCopyW( sPropName, 256, L"REGISTER_" );
+    StringCchCatW( sPropName, 256, (g_Extensions[nIndex])+1 );
+    CharUpperBuffW( sPropName+9, 4 );
+
+    if ( bRegister ) {
+        MsiSetPropertyW( handle, sPropName, L"1" );
+        OutputDebugStringFormatW( L"Set MSI property %s.\n", sPropName );
+    } else {
+        MsiSetPropertyW( handle, sPropName, L"0" );
+        OutputDebugStringFormatW( L"Unset MSI property %s.\n", sPropName );
+    }
+}
+
+static void saveOldRegistration( LPCWSTR lpSubKey )
+{
+    HKEY    hKey = nullptr;
+    LONG    lResult = RegOpenKeyExW( HKEY_CLASSES_ROOT, lpSubKey, 0,
+                                     KEY_QUERY_VALUE|KEY_SET_VALUE, &hKey );
+
+    if ( ERROR_SUCCESS == lResult )
+    {
+        WCHAR   szBuffer[1024];
+        DWORD   nSize = sizeof( szBuffer );
+
+        lResult = RegQueryValueExW( hKey, L"", nullptr, nullptr, reinterpret_cast<LPBYTE>(szBuffer), &nSize );
+        if ( ERROR_SUCCESS == lResult )
+        {
+            szBuffer[nSize/sizeof(*szBuffer)] = L'\0';
+
+            // No need to save associations for our own types
+            if ( wcsncmp( szBuffer, L"LibreOffice.", 12 ) != 0 )
+            {
+                // Save the old association
+                RegSetValueExW( hKey, L"LOBackupAssociation", 0,
+                                REG_SZ, reinterpret_cast<LPBYTE>(szBuffer), nSize );
+                // Also save what the old association means, just so we can try to verify
+                // if/when restoring it that the old application still exists
+                HKEY hKey2 = nullptr;
+                lResult = RegOpenKeyExW( HKEY_CLASSES_ROOT, szBuffer, 0,
+                                         KEY_QUERY_VALUE, &hKey2 );
+                if ( ERROR_SUCCESS == lResult )
+                {
+                    nSize = sizeof( szBuffer );
+                    lResult = RegQueryValueExW( hKey2, L"", nullptr, nullptr, reinterpret_cast<LPBYTE>(szBuffer), &nSize );
+                    if ( ERROR_SUCCESS == lResult )
+                    {
+                        RegSetValueExW( hKey, L"LOBackupAssociationDeref", 0,
+                                        REG_SZ, reinterpret_cast<LPBYTE>(szBuffer), nSize );
+                    }
+                    RegCloseKey( hKey2 );
+                }
+            }
+        }
+        RegCloseKey( hKey );
+    }
+}
+
+static void registerForExtensions( MSIHANDLE handle, bool bRegisterAll )
+{ // Check all file extensions
+    int nIndex = 0;
+    while ( g_Extensions[nIndex] != nullptr )
+    {
+        saveOldRegistration( g_Extensions[nIndex] );
+
+        bool bRegister = bRegisterAll || CheckExtensionInRegistry( g_Extensions[nIndex] );
+        if ( bRegister )
+            registerForExtension( handle, nIndex, true );
+        ++nIndex;
+    }
+}
+
+static bool checkSomeExtensionInRegistry( const int nStart, const int nEnd )
+{ // Check all file extensions
+    int nIndex = nStart;
+    bool bFound = false;
+
+    while ( !bFound && (nIndex < nEnd) && (g_Extensions[nIndex] != nullptr) )
+    {
+        bFound = ! CheckExtensionInRegistry( g_Extensions[nIndex] );
+
+        if ( bFound )
+            OutputDebugStringFormatW( L"Found registration for [%s].\n", g_Extensions[nIndex] );
+
+        ++nIndex;
+    }
+    return bFound;
+}
+
+static void registerSomeExtensions( MSIHANDLE handle, const int nStart, const int nEnd, bool bRegister )
+{ // Check all file extensions
+    int nIndex = nStart;
+
+    while ( (nIndex < nEnd) && (g_Extensions[nIndex] != nullptr) )
+    {
+        registerForExtension( handle, nIndex++, bRegister );
+    }
+}
+
+extern "C" __declspec(dllexport) UINT __stdcall LookForRegisteredExtensions( MSIHANDLE handle )
+{
+    OutputDebugStringFormatW( L"LookForRegisteredExtensions: " );
+
+    INSTALLSTATE current_state;
+    INSTALLSTATE future_state;
+
+    bool bWriterEnabled = false;
+    bool bCalcEnabled = false;
+    bool bImpressEnabled = false;
+    bool bDrawEnabled = false;
+    bool bRegisterNone = IsSetMsiPropW( handle, L"REGISTER_NO_MSO_TYPES" );
+
+    if ( ( ERROR_SUCCESS == MsiGetFeatureStateW( handle, L"gm_p_Wrt", &current_state, &future_state ) ) &&
+         ( (future_state == INSTALLSTATE_LOCAL) || ((current_state == INSTALLSTATE_LOCAL) && (future_state == INSTALLSTATE_UNKNOWN) ) ) )
+        bWriterEnabled = true;
+
+    OutputDebugStringFormatW( L"LookForRegisteredExtensions: Install state Writer is [%d], will be [%d]", current_state, future_state );
+    if ( bWriterEnabled )
+        OutputDebugStringFormatW( L"LookForRegisteredExtensions: Writer is enabled" );
+    else
+        OutputDebugStringFormatW( L"LookForRegisteredExtensions: Writer is NOT enabled" );
+
+    if ( ( ERROR_SUCCESS == MsiGetFeatureStateW( handle, L"gm_p_Calc", &current_state, &future_state ) ) &&
+         ( (future_state == INSTALLSTATE_LOCAL) || ((current_state == INSTALLSTATE_LOCAL) && (future_state == INSTALLSTATE_UNKNOWN) ) ) )
+        bCalcEnabled = true;
+
+    OutputDebugStringFormatW( L"LookForRegisteredExtensions: Install state Calc is [%d], will be [%d]", current_state, future_state );
+    if ( bCalcEnabled )
+        OutputDebugStringFormatW( L"LookForRegisteredExtensions: Calc is enabled" );
+    else
+        OutputDebugStringFormatW( L"LookForRegisteredExtensions: Calc is NOT enabled" );
+
+    if ( ( ERROR_SUCCESS == MsiGetFeatureStateW( handle, L"gm_p_Impress", &current_state, &future_state ) ) &&
+         ( (future_state == INSTALLSTATE_LOCAL) || ((current_state == INSTALLSTATE_LOCAL) && (future_state == INSTALLSTATE_UNKNOWN) ) ) )
+        bImpressEnabled = true;
+
+    OutputDebugStringFormatW( L"LookForRegisteredExtensions: Install state Impress is [%d], will be [%d]", current_state, future_state );
+    if ( bImpressEnabled )
+        OutputDebugStringFormatW( L"LookForRegisteredExtensions: Impress is enabled" );
+    else
+        OutputDebugStringFormatW( L"LookForRegisteredExtensions: Impress is NOT enabled" );
+
+    if ( ( ERROR_SUCCESS == MsiGetFeatureStateW( handle, L"gm_p_Draw", &current_state, &future_state ) ) &&
+         ( (future_state == INSTALLSTATE_LOCAL) || ((current_state == INSTALLSTATE_LOCAL) && (future_state == INSTALLSTATE_UNKNOWN) ) ) )
+        bDrawEnabled = true;
+
+    OutputDebugStringFormatW( L"LookForRegisteredExtensions: Install state Draw is [%d], will be [%d]", current_state, future_state );
+    if ( bImpressEnabled )
+        OutputDebugStringFormatW( L"LookForRegisteredExtensions: Draw is enabled" );
+    else
+        OutputDebugStringFormatW( L"LookForRegisteredExtensions: Draw is NOT enabled" );
+
+    MsiSetPropertyW( handle, L"SELECT_WORD", L"" );
+    MsiSetPropertyW( handle, L"SELECT_EXCEL", L"" );
+    MsiSetPropertyW( handle, L"SELECT_POWERPOINT", L"" );
+    MsiSetPropertyW( handle, L"SELECT_VISIO", L"" );
+
+    if ( ! bRegisterNone )
+    {
+        if ( IsSetMsiPropW( handle, L"REGISTER_ALL_MSO_TYPES" ) )
+        {
+            if ( bWriterEnabled )
+                MsiSetPropertyW( handle, L"SELECT_WORD", L"1" );
+            if ( bCalcEnabled )
+                MsiSetPropertyW( handle, L"SELECT_EXCEL", L"1" );
+            if ( bImpressEnabled )
+                MsiSetPropertyW( handle, L"SELECT_POWERPOINT", L"1" );
+            if ( bDrawEnabled )
+                MsiSetPropertyW( handle, L"SELECT_VISIO", L"1" );
+        }
+        else
+        {
+            if ( bWriterEnabled && ! checkSomeExtensionInRegistry( WORD_START, EXCEL_START ) )
+            {
+                MsiSetPropertyW( handle, L"SELECT_WORD", L"1" );
+                OutputDebugStringFormatW( L"LookForRegisteredExtensions: Register for Microsoft Word" );
+            }
+            if ( bCalcEnabled && ! checkSomeExtensionInRegistry( EXCEL_START, POWERPOINT_START ) )
+            {
+                MsiSetPropertyW( handle, L"SELECT_EXCEL", L"1" );
+                OutputDebugStringFormatW( L"LookForRegisteredExtensions: Register for Microsoft Excel" );
+            }
+            if ( bImpressEnabled && ! checkSomeExtensionInRegistry( POWERPOINT_START, VISIO_START ) )
+            {
+                MsiSetPropertyW( handle, L"SELECT_POWERPOINT", L"1" );
+                OutputDebugStringFormatW( L"LookForRegisteredExtensions: Register for Microsoft PowerPoint" );
+            }
+            if ( bImpressEnabled && ! checkSomeExtensionInRegistry( VISIO_START, VISIO_END ) )
+            {
+                MsiSetPropertyW( handle, L"SELECT_VISIO", L"1" );
+                OutputDebugStringFormatW( L"LookForRegisteredExtensions: Register for Microsoft Visio" );
+            }
+        }
+    }
+
+    MsiSetPropertyW( handle, L"FILETYPEDIALOGUSED", L"1" );
+
+    return ERROR_SUCCESS;
+}
+
+extern "C" __declspec(dllexport) UINT __stdcall RegisterSomeExtensions( MSIHANDLE handle )
+{
+    OutputDebugStringFormatW( L"RegisterSomeExtensions: " );
+
+    if ( IsSetMsiPropW( handle, L"SELECT_WORD" ) )
+    {
+        registerSomeExtensions( handle, WORD_START, EXCEL_START, true );
+        MsiSetFeatureStateW( handle, L"gm_p_Wrt_MSO_Reg", INSTALLSTATE_LOCAL );
+        OutputDebugStringFormatW( L"RegisterSomeExtensions: Register for Microsoft Word" );
+    }
+    else
+    {
+        registerSomeExtensions( handle, WORD_START, EXCEL_START, false );
+        MsiSetFeatureStateW( handle, L"gm_p_Wrt_MSO_Reg", INSTALLSTATE_ABSENT );
+    }
+
+    if ( IsSetMsiPropW( handle, L"SELECT_EXCEL" ) )
+    {
+        registerSomeExtensions( handle, EXCEL_START, POWERPOINT_START, true );
+        MsiSetFeatureStateW( handle, L"gm_p_Calc_MSO_Reg", INSTALLSTATE_LOCAL );
+        OutputDebugStringFormatW( L"RegisterSomeExtensions: Register for Microsoft Excel" );
+    }
+    else
+    {
+        registerSomeExtensions( handle, EXCEL_START, POWERPOINT_START, false );
+        MsiSetFeatureStateW( handle, L"gm_p_Calc_MSO_Reg", INSTALLSTATE_ABSENT );
+    }
+
+    if ( IsSetMsiPropW( handle, L"SELECT_POWERPOINT" ) )
+    {
+        registerSomeExtensions( handle, POWERPOINT_START, VISIO_START, true );
+        MsiSetFeatureStateW( handle, L"gm_p_Impress_MSO_Reg", INSTALLSTATE_LOCAL );
+        OutputDebugStringFormatW( L"RegisterSomeExtensions: Register for Microsoft PowerPoint" );
+    }
+    else
+    {
+        registerSomeExtensions( handle, POWERPOINT_START, VISIO_START, false );
+        MsiSetFeatureStateW( handle, L"gm_p_Impress_MSO_Reg", INSTALLSTATE_ABSENT );
+    }
+
+    if ( IsSetMsiPropW( handle, L"SELECT_VISIO" ) )
+    {
+        registerSomeExtensions( handle, VISIO_START, VISIO_END, true );
+        MsiSetFeatureStateW( handle, L"gm_p_Draw_MSO_Reg", INSTALLSTATE_LOCAL );
+        OutputDebugStringFormatW( L"RegisterSomeExtensions: Register for Microsoft Visio" );
+    }
+    else
+    {
+        registerSomeExtensions( handle, VISIO_START, VISIO_END, false );
+        MsiSetFeatureStateW( handle, L"gm_p_Draw_MSO_Reg", INSTALLSTATE_ABSENT );
+    }
+    return ERROR_SUCCESS;
+}
+
+extern "C" __declspec(dllexport) UINT __stdcall FindRegisteredExtensions( MSIHANDLE handle )
+{
+    if ( IsSetMsiPropW( handle, L"FILETYPEDIALOGUSED" ) )
+    {
+        OutputDebugStringFormatW( L"FindRegisteredExtensions: FILETYPEDIALOGUSED!" );
+        return ERROR_SUCCESS;
+    }
+
+    OutputDebugStringFormatW( L"FindRegisteredExtensions:" );
+
+    bool bRegisterAll = IsSetMsiPropW( handle, L"REGISTER_ALL_MSO_TYPES" );
+
+    if ( IsSetMsiPropW( handle, L"REGISTER_NO_MSO_TYPES" ) )
+    {
+        OutputDebugStringFormatW( L"FindRegisteredExtensions: Register none!" );
+        return ERROR_SUCCESS;
+    }
+    else if ( bRegisterAll )
+        OutputDebugStringFormatW( L"FindRegisteredExtensions: Force all on" );
+    else
+        OutputDebugStringFormatW( L"FindRegisteredExtensions: " );
+
+    // setting the msi properties SELECT_* will force registering for all corresponding
+    // file types
+    if ( IsSetMsiPropW( handle, L"SELECT_WORD" ) )
+        registerSomeExtensions( handle, WORD_START, EXCEL_START, true );
+    if ( IsSetMsiPropW( handle, L"SELECT_EXCEL" ) )
+        registerSomeExtensions( handle, EXCEL_START, POWERPOINT_START, true );
+    if ( IsSetMsiPropW( handle, L"SELECT_POWERPOINT" ) )
+        registerSomeExtensions( handle, POWERPOINT_START, VISIO_START, true );
+    if ( IsSetMsiPropW( handle, L"SELECT_VISIO" ) )
+        registerSomeExtensions( handle, VISIO_START, VISIO_END, true );
+
+    registerForExtensions( handle, bRegisterAll );
+
+    return ERROR_SUCCESS;
+}
+
+static void restoreOldRegistration( LPCWSTR lpSubKey )
+{
+    HKEY    hKey = nullptr;
+    LONG    lResult = RegOpenKeyExW( HKEY_CLASSES_ROOT, lpSubKey, 0,
+                                     KEY_QUERY_VALUE|KEY_SET_VALUE, &hKey );
+
+    if ( ERROR_SUCCESS == lResult )
+    {
+        WCHAR   szBuffer[1024];
+        DWORD   nSize = sizeof( szBuffer );
+
+        lResult = RegQueryValueExW( hKey, L"LOBackupAssociation", nullptr, nullptr,
+                                    reinterpret_cast<LPBYTE>(szBuffer), &nSize );
+        if ( ERROR_SUCCESS == lResult )
+        {
+            szBuffer[nSize/sizeof(*szBuffer)] = L'\0';
+            HKEY hKey2 = nullptr;
+            lResult = RegOpenKeyExW( HKEY_CLASSES_ROOT, szBuffer, 0,
+                                     KEY_QUERY_VALUE, &hKey2 );
+            if ( ERROR_SUCCESS == lResult )
+            {
+                WCHAR  szBuffer2[1024];
+                DWORD  nSize2 = sizeof( szBuffer2 );
+
+                lResult = RegQueryValueExW( hKey2, L"", nullptr, nullptr, reinterpret_cast<LPBYTE>(szBuffer2), &nSize2 );
+                if ( ERROR_SUCCESS == lResult )
+                {
+                    WCHAR  szBuffer3[1024];
+                    DWORD  nSize3 = sizeof( szBuffer3 );
+
+                    // Try to verify that the old association is OK to restore
+                    lResult = RegQueryValueExW( hKey, L"LOBackupAssociationDeref", nullptr, nullptr,
+                                                reinterpret_cast<LPBYTE>(szBuffer3), &nSize3 );
+                    if ( ERROR_SUCCESS == lResult )
+                    {
+                        if ( nSize2 == nSize3 && wcsncmp (szBuffer2, szBuffer3, nSize2/sizeof(*szBuffer2)) == 0)
+                        {
+                            // Yep. So restore it
+                            RegSetValueExW( hKey, L"", 0, REG_SZ, reinterpret_cast<LPBYTE>(szBuffer), nSize );
+                        }
+                    }
+                }
+                RegCloseKey( hKey2 );
+            }
+            RegDeleteValueW( hKey, L"LOBackupAssociation" );
+        }
+        RegDeleteValueW( hKey, L"LOBackupAssociationDeref" );
+        RegCloseKey( hKey );
+    }
+}
+
+extern "C" __declspec(dllexport) UINT __stdcall RestoreRegAllMSDoc( MSIHANDLE /*handle*/ )
+{
+    OutputDebugStringFormatW( L"RestoreRegAllMSDoc\n" );
+
+    int nIndex = 0;
+    while ( g_Extensions[nIndex] != nullptr )
+    {
+        restoreOldRegistration( g_Extensions[nIndex] );
+        ++nIndex;
+    }
+
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/reg_dlls/reg_dlls.cxx b/setup_native/source/win32/customactions/reg_dlls/reg_dlls.cxx
new file mode 100644
index 0000000000..b1e204a80d
--- /dev/null
+++ b/setup_native/source/win32/customactions/reg_dlls/reg_dlls.cxx
@@ -0,0 +1,323 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <iomanip>
+#include <memory>
+#include <string>
+#include <sstream>
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <Shlobj.h>
+#include <msiquery.h>
+
+namespace
+{
+template <typename IntType> std::string Num2Hex(IntType n)
+{
+    std::stringstream sMsg;
+    sMsg << "0x" << std::uppercase << std::setfill('0') << std::setw(sizeof(n) * 2) << std::hex
+         << n;
+    return sMsg.str();
+}
+
+template <typename IntType> std::string Num2Dec(IntType n)
+{
+    std::stringstream sMsg;
+    sMsg << n;
+    return sMsg.str();
+}
+
+std::string Win32ErrorMessage(const char* sFunc, DWORD nWin32Error)
+{
+    std::stringstream sMsg;
+    sMsg << sFunc << " failed with Win32 error code " << Num2Hex(nWin32Error) << "!";
+
+    return sMsg.str();
+}
+
+void ThrowHResult(const char* sFunc, HRESULT hr)
+{
+    std::stringstream sMsg;
+    sMsg << sFunc << " failed (HRESULT = " << Num2Hex(hr) << ")!";
+
+    throw std::exception(sMsg.str().c_str());
+}
+
+void CheckHResult(const char* sFunc, HRESULT hr)
+{
+    if (FAILED(hr))
+        ThrowHResult(sFunc, hr);
+}
+
+void ThrowWin32Error(const char* sFunc, DWORD nWin32Error)
+{
+    throw std::exception(Win32ErrorMessage(sFunc, nWin32Error).c_str());
+}
+
+void ThrowLastError(const char* sFunc) { ThrowWin32Error(sFunc, GetLastError()); }
+
+void CheckWin32Error(const char* sFunc, DWORD nWin32Error)
+{
+    if (nWin32Error != ERROR_SUCCESS)
+        ThrowWin32Error(sFunc, nWin32Error);
+}
+
+std::wstring GetKnownFolder(const KNOWNFOLDERID& rfid)
+{
+    PWSTR sPath = nullptr;
+    HRESULT hr = SHGetKnownFolderPath(rfid, KF_FLAG_DEFAULT, nullptr, &sPath);
+    CheckHResult("SHGetKnownFolderPath", hr);
+    std::wstring sResult(sPath);
+    CoTaskMemFree(sPath);
+    return sResult;
+}
+
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRecord, std::ostringstream& sTmpl, UINT)
+{
+    MsiRecordSetStringA(hRecord, 0, sTmpl.str().c_str());
+    MsiProcessMessage(hInst, INSTALLMESSAGE_INFO, hRecord);
+}
+
+void RecSetString(MSIHANDLE hRec, UINT nField, LPCSTR sVal)
+{
+    MsiRecordSetStringA(hRec, nField, sVal);
+}
+
+void RecSetString(MSIHANDLE hRec, UINT nField, LPCWSTR sVal)
+{
+    MsiRecordSetStringW(hRec, nField, sVal);
+}
+
+template <class S1, class... SOther>
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRec, std::ostringstream& sTmpl, UINT nField,
+                  const S1& elem, const SOther&... others);
+
+template <class Ch, class... SOther>
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRec, std::ostringstream& sTmpl, UINT nField,
+                  const Ch* elem, const SOther&... others)
+{
+    sTmpl << " [" << nField << "]";
+    RecSetString(hRec, nField, elem);
+    WriteLogElem(hInst, hRec, sTmpl, nField + 1, others...);
+}
+
+template <class S1, class... SOther>
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRec, std::ostringstream& sTmpl, UINT nField,
+                  const S1& elem, const SOther&... others)
+{
+    WriteLogElem(hInst, hRec, sTmpl, nField, elem.c_str(), others...);
+}
+
+std::string sLogPrefix;
+
+template <class... StrType> void WriteLog(MSIHANDLE hInst, const StrType&... elements)
+{
+    PMSIHANDLE hRec = MsiCreateRecord(sizeof...(elements));
+    if (!hRec)
+        return;
+
+    std::ostringstream sTemplate;
+    sTemplate << sLogPrefix;
+    WriteLogElem(hInst, hRec, sTemplate, 1, elements...);
+}
+
+std::wstring MsiGetPropertyW(MSIHANDLE hInst, LPCWSTR szName)
+{
+    std::wstring sResult;
+    DWORD nSz = 0;
+    UINT nRet = ::MsiGetPropertyW(hInst, szName, const_cast<wchar_t*>(L""), &nSz);
+    if (nRet == ERROR_MORE_DATA)
+    {
+        ++nSz;
+        auto buf = std::make_unique<wchar_t[]>(nSz);
+        CheckWin32Error("MsiGetPropertyW", ::MsiGetPropertyW(hInst, szName, buf.get(), &nSz));
+        sResult = buf.get();
+        WriteLog(hInst, "Property", szName, "=", sResult);
+    }
+    else
+        CheckWin32Error("MsiGetPropertyW", nRet);
+
+    return sResult;
+}
+
+typedef std::unique_ptr<void, decltype(&CloseHandle)> CloseHandleGuard;
+CloseHandleGuard Guard(HANDLE h) { return CloseHandleGuard(h, CloseHandle); }
+
+void RegDLL(MSIHANDLE hInst, const std::wstring& sArgs, bool bUnreg)
+{
+    static std::wstring sRegSvr32 = GetKnownFolder(FOLDERID_System) + L"\\regsvr32.exe";
+
+    try
+    {
+        std::wstring sCmd = L"\"" + sRegSvr32 + L"\" /s ";
+        if (bUnreg)
+            sCmd += L"/u ";
+        sCmd += sArgs;
+        WriteLog(hInst, "Prepared regsvr32 command:", sCmd);
+
+        STARTUPINFOW si{};
+        si.cb = sizeof(si);
+        PROCESS_INFORMATION pi{};
+        if (!CreateProcessW(sRegSvr32.c_str(), const_cast<LPWSTR>(sCmd.c_str()), nullptr, nullptr,
+                            FALSE, CREATE_NO_WINDOW, nullptr, nullptr, &si, &pi))
+            ThrowLastError("CreateProcessW");
+        auto aCloseProcHandleGuard(Guard(pi.hProcess));
+        WriteLog(hInst, "CreateProcessW succeeded");
+
+        DWORD nWaitResult = WaitForSingleObject(pi.hProcess, INFINITE);
+        if (nWaitResult != WAIT_OBJECT_0)
+            ThrowWin32Error("WaitForSingleObject", nWaitResult);
+
+        DWORD nExitCode = 0;
+        if (!GetExitCodeProcess(pi.hProcess, &nExitCode))
+            ThrowLastError("GetExitCodeProcess");
+
+        WriteLog(hInst, "regsvr32 returned:", Num2Dec(nExitCode));
+    }
+    catch (std::exception& e)
+    {
+        WriteLog(hInst, e.what());
+    }
+}
+
+void ProcessCustomActionData(MSIHANDLE hInst, bool bUnreg)
+{
+    WriteLog(hInst, "Checking value of CustomActionData");
+    std::wstring sCustomActionData = MsiGetPropertyW(hInst, L"CustomActionData");
+    WriteLog(hInst, "Got CustomActionData value:", sCustomActionData);
+    std::wstringstream ss(sCustomActionData);
+    std::wstring sToken;
+    while (std::getline(ss, sToken, L'|'))
+    {
+        if (!sToken.empty())
+        {
+            RegDLL(hInst, sToken, bUnreg);
+        }
+    }
+}
+} // namespace
+
+// Deferred action "reg_dlls" that must be run from system account. Receives a list of regsvr32
+// arguments: DLLs which need registering, and possibly /i argument with its parameter.
+extern "C" __declspec(dllexport) UINT __stdcall RegDLLs(MSIHANDLE hInstall)
+{
+    sLogPrefix = "RegDLLs:";
+    WriteLog(hInstall, "started");
+
+    ProcessCustomActionData(hInstall, false);
+    return ERROR_SUCCESS;
+}
+
+// Deferred action "unreg_dlls" that must be run from system account. Receives a list of regsvr32
+// arguments: DLLs which need registering, and possibly /i argument with its parameter.
+extern "C" __declspec(dllexport) UINT __stdcall UnregDLLs(MSIHANDLE hInstall)
+{
+    sLogPrefix = "UnregDLLs:";
+    WriteLog(hInstall, "started");
+
+    ProcessCustomActionData(hInstall, true);
+    return ERROR_SUCCESS;
+}
+
+// Immediate action "prep_reg_unreg_dlls". Checks states of the features to prepare custom action data
+// for reg_dlls and unreg_dlls deferred actions.
+extern "C" __declspec(dllexport) UINT __stdcall PrepRegUnregDLLs(MSIHANDLE hInstall)
+{
+    sLogPrefix = "PrepRegUnregDLLs:";
+    WriteLog(hInstall, "started");
+
+    try
+    {
+        INSTALLSTATE current_state_SubstMSO;
+        INSTALLSTATE future_state_SubstMSO;
+        CheckWin32Error("MsiGetFeatureStateW",
+                        MsiGetFeatureStateW(hInstall, L"gm_SharePointSupport_SubstMSO",
+                                            &current_state_SubstMSO, &future_state_SubstMSO));
+
+        WriteLog(hInstall, "gm_SharePointSupport_SubstMSO state:", //
+                 "current", std::to_string(current_state_SubstMSO), //
+                 "future", std::to_string(future_state_SubstMSO)); //
+
+        INSTALLSTATE current_state_Main;
+        INSTALLSTATE future_state_Main;
+        CheckWin32Error("MsiGetFeatureStateW",
+                        MsiGetFeatureStateW(hInstall, L"gm_o_SharePointSupport",
+                                            &current_state_Main, &future_state_Main));
+
+        WriteLog(hInstall, "gm_o_SharePointSupport state:", //
+                 "current", std::to_string(current_state_Main), //
+                 "future", std::to_string(future_state_Main)); //
+
+        const bool bUnregSubstMSO = current_state_SubstMSO == INSTALLSTATE_LOCAL
+                                    && future_state_SubstMSO == INSTALLSTATE_ABSENT;
+        const bool bUnregMain
+            = current_state_Main == INSTALLSTATE_LOCAL && future_state_Main == INSTALLSTATE_ABSENT;
+        const bool bRegSubstMSO = current_state_SubstMSO == INSTALLSTATE_ABSENT
+                                  && future_state_SubstMSO == INSTALLSTATE_LOCAL;
+        // basic registration is needed when either:
+        // 1. gm_o_SharePointSupport is installed;
+        // 2. gm_SharePointSupport_SubstMSO is uninstalled (and unregisters everything), but
+        //    gm_o_SharePointSupport is not, so needs to be re-registered
+        const bool bRegMain
+            = (current_state_Main == INSTALLSTATE_ABSENT && future_state_Main == INSTALLSTATE_LOCAL)
+              || (bUnregSubstMSO && !bUnregMain);
+
+        std::wstring sUnregStr;
+        if (bUnregSubstMSO)
+        {
+            sUnregStr = L"/i:Substitute_OWSSUPP \"[#spsupp_x86.dll]\"|"
+                        L"/i:Substitute_OWSSUPP \"[#spsupp_x64.dll]\"";
+        }
+        else if (bUnregMain)
+        {
+            sUnregStr = L"\"[#spsupp_x86.dll]\"|\"[#spsupp_x64.dll]\"";
+        }
+
+        std::wstring sRegStr;
+        if (bRegSubstMSO)
+        {
+            sRegStr = L"/i:Substitute_OWSSUPP \"[#spsupp_x86.dll]\"|"
+                      L"/i:Substitute_OWSSUPP \"[#spsupp_x64.dll]\"";
+        }
+        else if (bRegMain)
+        {
+            sRegStr = L"\"[#spsupp_x86.dll]\"|\"[#spsupp_x64.dll]\"";
+        }
+
+        auto SetFormattedPropW = [&](LPCWSTR sProp, const std::wstring& sVal) {
+            PMSIHANDLE hRec = MsiCreateRecord(0);
+            if (!hRec)
+                throw std::exception("MsiCreateRecord failed!");
+            MsiRecordSetStringW(hRec, 0, sVal.c_str());
+            DWORD nSz = 0;
+            if (MsiFormatRecordW(hInstall, hRec, const_cast<wchar_t*>(L""), &nSz)
+                == ERROR_MORE_DATA)
+            {
+                ++nSz;
+                auto buf = std::make_unique<wchar_t[]>(nSz);
+                CheckWin32Error("MsiFormatRecordW",
+                                MsiFormatRecordW(hInstall, hRec, buf.get(), &nSz));
+                CheckWin32Error("MsiSetPropertyW", MsiSetPropertyW(hInstall, sProp, buf.get()));
+            }
+        };
+        if (!sRegStr.empty())
+            SetFormattedPropW(L"reg_dlls", sRegStr);
+        if (!sUnregStr.empty())
+            SetFormattedPropW(L"unreg_dlls", sUnregStr);
+    }
+    catch (std::exception& e)
+    {
+        WriteLog(hInstall, e.what());
+    }
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/reg_dlls/reg_dlls.def b/setup_native/source/win32/customactions/reg_dlls/reg_dlls.def
new file mode 100644
index 0000000000..d0f31c491b
--- /dev/null
+++ b/setup_native/source/win32/customactions/reg_dlls/reg_dlls.def
@@ -0,0 +1,5 @@
+LIBRARY		"reg_dlls.dll"
+EXPORTS
+			RegDLLs
+			UnregDLLs
+			PrepRegUnregDLLs
diff --git a/setup_native/source/win32/customactions/regactivex/regactivex.cxx b/setup_native/source/win32/customactions/regactivex/regactivex.cxx
new file mode 100644
index 0000000000..48b11bd4f4
--- /dev/null
+++ b/setup_native/source/win32/customactions/regactivex/regactivex.cxx
@@ -0,0 +1,344 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#include <msiquery.h>
+
+#include <cassert>
+#include <string.h>
+#include <malloc.h>
+
+#define CHART_COMPONENT 1
+#define DRAW_COMPONENT 2
+#define IMPRESS_COMPONENT 4
+#define CALC_COMPONENT 8
+#define WRITER_COMPONENT 16
+#define MATH_COMPONENT 32
+
+typedef int ( __stdcall * DllNativeRegProc ) ( int, BOOL, BOOL, const wchar_t* );
+typedef int ( __stdcall * DllNativeUnregProc ) ( int, BOOL, BOOL );
+
+static bool UnicodeEquals( wchar_t const * pStr1, wchar_t const * pStr2 )
+{
+    if ( pStr1 == nullptr && pStr2 == nullptr )
+        return true;
+    else if ( pStr1 == nullptr || pStr2 == nullptr )
+        return false;
+
+    while( *pStr1 == *pStr2 && *pStr1 && *pStr2 )
+    {
+        pStr1++;
+        pStr2++;
+    }
+
+    return ( *pStr1 == 0 && *pStr2 == 0 );
+}
+
+
+static void RegisterActiveXNative( const wchar_t* pActiveXPath, int nMode, bool InstallForAllUser, bool InstallFor64Bit )
+{
+    HINSTANCE hModule = LoadLibraryExW( pActiveXPath, nullptr, LOAD_WITH_ALTERED_SEARCH_PATH );
+    if( hModule )
+    {
+        DllNativeRegProc pNativeProc = reinterpret_cast<DllNativeRegProc>(GetProcAddress( hModule, "DllRegisterServerNative" ));
+        if( pNativeProc!=nullptr )
+        {
+            int nLen = wcslen( pActiveXPath );
+            int nRemoveLen = strlen( "\\so_activex.dll" );
+            if ( nLen > nRemoveLen )
+            {
+                wchar_t* pProgramPath = static_cast<wchar_t*>( malloc( (nLen - nRemoveLen + 1) * sizeof(wchar_t) ) );
+                assert(pProgramPath); // Don't handle OOM conditions
+                wcsncpy( pProgramPath, pActiveXPath, nLen - nRemoveLen );
+                pProgramPath[ nLen - nRemoveLen ] = 0;
+
+                ( *pNativeProc )( nMode, InstallForAllUser, InstallFor64Bit, pProgramPath );
+
+                free( pProgramPath );
+            }
+        }
+
+        FreeLibrary( hModule );
+    }
+}
+
+
+static void UnregisterActiveXNative( const wchar_t* pActiveXPath, int nMode, bool InstallForAllUser, bool InstallFor64Bit )
+{
+    HINSTANCE hModule = LoadLibraryExW( pActiveXPath, nullptr, LOAD_WITH_ALTERED_SEARCH_PATH );
+    if( hModule )
+    {
+        DllNativeUnregProc pNativeProc = reinterpret_cast<DllNativeUnregProc>(GetProcAddress( hModule, "DllUnregisterServerNative" ));
+        if( pNativeProc!=nullptr )
+            ( *pNativeProc )( nMode, InstallForAllUser, InstallFor64Bit );
+
+        FreeLibrary( hModule );
+    }
+}
+
+
+static bool GetMsiPropW( MSIHANDLE hMSI, const wchar_t* pPropName, wchar_t** ppValue )
+{
+    DWORD sz = 0;
+    if ( MsiGetPropertyW( hMSI, pPropName, const_cast<wchar_t *>(L""), &sz ) == ERROR_MORE_DATA )
+    {
+        sz++;
+        DWORD nbytes = sz * sizeof( wchar_t );
+        wchar_t* buff = static_cast<wchar_t*>( malloc( nbytes ) );
+        assert(buff); // Don't handle OOM conditions
+        ZeroMemory( buff, nbytes );
+        MsiGetPropertyW( hMSI, pPropName, buff, &sz );
+        *ppValue = buff;
+
+        return true;
+    }
+
+    return false;
+}
+
+
+static bool GetActiveXControlPath( MSIHANDLE hMSI, wchar_t** ppActiveXPath )
+{
+    wchar_t* pProgPath = nullptr;
+    if ( GetMsiPropW( hMSI, L"INSTALLLOCATION", &pProgPath ) && pProgPath )
+    {
+        int nLen = wcslen( pProgPath );
+        *ppActiveXPath = static_cast<wchar_t*>( malloc( (nLen + 23) * sizeof(wchar_t) ) );
+        wcsncpy( *ppActiveXPath, pProgPath, nLen );
+        wcsncpy( (*ppActiveXPath) + nLen, L"program\\so_activex.dll", 22 );
+        (*ppActiveXPath)[nLen+22] = 0;
+
+        free(pProgPath);
+
+        return true;
+    }
+
+    return false;
+}
+
+
+static bool GetDelta( MSIHANDLE hMSI, int& nOldInstallMode, int& nInstallMode, int& nDeinstallMode )
+{
+    // for now the chart is always installed
+    nOldInstallMode = CHART_COMPONENT;
+    nInstallMode = CHART_COMPONENT;
+    nDeinstallMode = 0;
+
+    INSTALLSTATE current_state;
+    INSTALLSTATE future_state;
+
+    if ( ERROR_SUCCESS == MsiGetFeatureStateW( hMSI, L"gm_p_Wrt_Bin", &current_state, &future_state ) )
+    {
+        // analyze writer installation mode
+        if ( current_state == INSTALLSTATE_LOCAL )
+            nOldInstallMode |= WRITER_COMPONENT;
+
+        if ( future_state == INSTALLSTATE_LOCAL
+          || ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_UNKNOWN ) )
+            nInstallMode |= WRITER_COMPONENT;
+        else if ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_ABSENT )
+            nDeinstallMode |= WRITER_COMPONENT;
+    }
+    else
+    {
+        // assert( FALSE );
+    }
+
+    if ( ERROR_SUCCESS == MsiGetFeatureStateW( hMSI, L"gm_p_Calc_Bin", &current_state, &future_state ) )
+    {
+        // analyze calc installation mode
+        if ( current_state == INSTALLSTATE_LOCAL )
+            nOldInstallMode |= CALC_COMPONENT;
+
+        if ( future_state == INSTALLSTATE_LOCAL
+          || ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_UNKNOWN ) )
+            nInstallMode |= CALC_COMPONENT;
+        else if ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_ABSENT )
+            nDeinstallMode |= CALC_COMPONENT;
+    }
+    else
+    {
+        // assert( FALSE );
+    }
+
+    if ( ERROR_SUCCESS == MsiGetFeatureStateW( hMSI, L"gm_p_Draw_Bin", &current_state, &future_state ) )
+    {
+        // analyze draw installation mode
+        if ( current_state == INSTALLSTATE_LOCAL )
+            nOldInstallMode |= DRAW_COMPONENT;
+
+        if ( future_state == INSTALLSTATE_LOCAL
+          || ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_UNKNOWN ) )
+            nInstallMode |= DRAW_COMPONENT;
+        else if ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_ABSENT )
+            nDeinstallMode |= DRAW_COMPONENT;
+    }
+    else
+    {
+        // assert( FALSE );
+    }
+
+    if ( ERROR_SUCCESS == MsiGetFeatureStateW( hMSI, L"gm_p_Impress_Bin", &current_state, &future_state ) )
+    {
+        // analyze impress installation mode
+        if ( current_state == INSTALLSTATE_LOCAL )
+            nOldInstallMode |= IMPRESS_COMPONENT;
+
+        if ( future_state == INSTALLSTATE_LOCAL
+          || ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_UNKNOWN ) )
+            nInstallMode |= IMPRESS_COMPONENT;
+        else if ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_ABSENT )
+            nDeinstallMode |= IMPRESS_COMPONENT;
+    }
+    else
+    {
+        // assert( FALSE );
+    }
+
+    if ( ERROR_SUCCESS == MsiGetFeatureStateW( hMSI, L"gm_p_Math_Bin", &current_state, &future_state ) )
+    {
+        // analyze math installation mode
+        if ( current_state == INSTALLSTATE_LOCAL )
+            nOldInstallMode |= MATH_COMPONENT;
+
+        if ( future_state == INSTALLSTATE_LOCAL
+          || ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_UNKNOWN ) )
+            nInstallMode |= MATH_COMPONENT;
+        else if ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_ABSENT )
+            nDeinstallMode |= MATH_COMPONENT;
+    }
+    else
+    {
+        // assert( FALSE );
+    }
+
+    return true;
+}
+
+
+static bool MakeInstallForAllUsers( MSIHANDLE hMSI )
+{
+    bool bResult = false;
+    wchar_t* pVal = nullptr;
+    if ( GetMsiPropW( hMSI, L"ALLUSERS", &pVal ) && pVal )
+    {
+        bResult = UnicodeEquals( pVal , L"1" );
+        free( pVal );
+    }
+
+    return bResult;
+}
+
+
+static bool MakeInstallFor64Bit( MSIHANDLE hMSI )
+{
+    bool bResult = false;
+    wchar_t* pVal = nullptr;
+    if ( GetMsiPropW( hMSI, L"VersionNT64", &pVal ) && pVal )
+    {
+        bResult = true;
+        free( pVal );
+    }
+
+    return bResult;
+}
+
+extern "C" __declspec(dllexport) UINT __stdcall InstallActiveXControl( MSIHANDLE hMSI )
+{
+    INSTALLSTATE current_state;
+    INSTALLSTATE future_state;
+
+    if ( ERROR_SUCCESS == MsiGetFeatureStateW( hMSI, L"gm_o_Activexcontrol", &current_state, &future_state ) )
+    {
+        int nOldInstallMode = 0;
+        int nInstallMode = 0;
+        int nDeinstallMode = 0;
+        bool bInstallForAllUser = MakeInstallForAllUsers( hMSI );
+        bool bInstallFor64Bit = MakeInstallFor64Bit( hMSI );
+
+        wchar_t* pActiveXPath = nullptr;
+        if ( GetActiveXControlPath( hMSI, &pActiveXPath ) && pActiveXPath
+        && GetDelta( hMSI, nOldInstallMode, nInstallMode, nDeinstallMode ) )
+        {
+            if ( future_state == INSTALLSTATE_LOCAL
+              || ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_UNKNOWN ) )
+            {
+                // the control is installed in the new selected configuration
+
+                if ( current_state == INSTALLSTATE_LOCAL && nDeinstallMode )
+                    UnregisterActiveXNative( pActiveXPath, nDeinstallMode, bInstallForAllUser, bInstallFor64Bit );
+
+                if ( nInstallMode )
+                    RegisterActiveXNative( pActiveXPath, nInstallMode, bInstallForAllUser, bInstallFor64Bit );
+            }
+            else if ( current_state == INSTALLSTATE_LOCAL && future_state == INSTALLSTATE_ABSENT )
+            {
+                if ( nOldInstallMode )
+                    UnregisterActiveXNative( pActiveXPath, nOldInstallMode, bInstallForAllUser, bInstallFor64Bit );
+            }
+        }
+
+        if ( pActiveXPath )
+            free( pActiveXPath );
+    }
+    else
+    {
+        // assert( FALSE );
+    }
+
+    return ERROR_SUCCESS;
+}
+
+
+extern "C" __declspec(dllexport) UINT __stdcall DeinstallActiveXControl( MSIHANDLE hMSI )
+{
+    INSTALLSTATE current_state;
+    INSTALLSTATE future_state;
+
+    if ( ERROR_SUCCESS == MsiGetFeatureStateW( hMSI, L"gm_o_Activexcontrol", &current_state, &future_state ) )
+    {
+        wchar_t* pActiveXPath = nullptr;
+        if ( current_state == INSTALLSTATE_LOCAL && GetActiveXControlPath( hMSI, &pActiveXPath ) && pActiveXPath )
+        {
+            bool bInstallForAllUser = MakeInstallForAllUsers( hMSI );
+            bool bInstallFor64Bit = MakeInstallFor64Bit( hMSI );
+
+            {
+                UnregisterActiveXNative( pActiveXPath,
+                                        CHART_COMPONENT
+                                        | DRAW_COMPONENT
+                                        | IMPRESS_COMPONENT
+                                        | CALC_COMPONENT
+                                        | WRITER_COMPONENT
+                                        | MATH_COMPONENT,
+                                        bInstallForAllUser,
+                                        bInstallFor64Bit );
+            }
+
+            free( pActiveXPath );
+        }
+    }
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/regactivex/regactivex.def b/setup_native/source/win32/customactions/regactivex/regactivex.def
new file mode 100644
index 0000000000..8a4c744d78
--- /dev/null
+++ b/setup_native/source/win32/customactions/regactivex/regactivex.def
@@ -0,0 +1,4 @@
+LIBRARY		"regactivex.dll"
+EXPORTS
+			InstallActiveXControl
+			DeinstallActiveXControl 
\ No newline at end of file
diff --git a/setup_native/source/win32/customactions/sellang/sellang.cxx b/setup_native/source/win32/customactions/sellang/sellang.cxx
new file mode 100644
index 0000000000..75f6fb50c9
--- /dev/null
+++ b/setup_native/source/win32/customactions/sellang/sellang.cxx
@@ -0,0 +1,396 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+/* Currently the "all" installer has a bit over 100 UI languages, and
+ * I doubt it will grow a lot over that.
+ */
+#define MAX_LANGUAGES 200
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <msiquery.h>
+#include <malloc.h>
+
+#include <cassert>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sal/macros.h>
+#include <systools/win32/uwinapi.h>
+#include <algorithm>
+
+#include <spellchecker_selection.hxx>
+
+static bool GetMsiPropA( MSIHANDLE hMSI, const char* pPropName, char** ppValue )
+{
+    DWORD sz = 0;
+    if ( MsiGetPropertyA( hMSI, pPropName, const_cast<char *>(""), &sz ) == ERROR_MORE_DATA ) {
+        sz++;
+        DWORD nbytes = sz * sizeof( char );
+        char* buff = static_cast<char*>( malloc( nbytes ) );
+        assert(buff); // Don't handle OOM conditions
+        ZeroMemory( buff, nbytes );
+        MsiGetPropertyA( hMSI, pPropName, buff, &sz );
+        *ppValue = buff;
+        return ( buff[0] != '\0' );
+    }
+    return false;
+}
+
+static const char *
+langid_to_string( LANGID langid )
+{
+    /* Map from LANGID to string. The languages below are now in
+     * alphabetical order of codes as in
+     * l10ntools/source/ulfconv/msi-encodinglist.txt. Only the
+     * language part is returned in the string.
+     */
+    switch (PRIMARYLANGID (langid)) {
+    case LANG_AFRIKAANS: return "af";
+    case LANG_AMHARIC: return "am";
+    case LANG_ARABIC: return "ar";
+    case LANG_ASSAMESE: return "as";
+    case LANG_BELARUSIAN: return "be";
+    case LANG_BULGARIAN: return "bg";
+    case LANG_BENGALI: return "bn";
+    case LANG_BRETON: return "br";
+    case LANG_CATALAN: return "ca";
+    case LANG_CZECH: return "cs";
+    case LANG_WELSH: return "cy";
+    case LANG_DANISH: return "da";
+    case LANG_GERMAN: return "de";
+    case LANG_GREEK: return "el";
+    case LANG_ENGLISH: return "en";
+    case LANG_SPANISH: return "es";
+    case LANG_ESTONIAN: return "et";
+    case LANG_BASQUE: return "eu";
+    case LANG_FARSI: return "fa";
+    case LANG_FINNISH: return "fi";
+    case LANG_FAEROESE: return "fo";
+    case LANG_FRENCH: return "fr";
+    case LANG_IRISH: return "ga";
+    case LANG_GALICIAN: return "gl";
+    case LANG_GUJARATI: return "gu";
+    case LANG_HEBREW: return "he";
+    case LANG_HINDI: return "hi";
+    case LANG_HUNGARIAN: return "hu";
+    case LANG_ARMENIAN: return "hy";
+    case LANG_INDONESIAN: return "id";
+    case LANG_ICELANDIC: return "is";
+    case LANG_ITALIAN: return "it";
+    case LANG_JAPANESE: return "ja";
+    case LANG_GEORGIAN: return "ka";
+    case LANG_KAZAK: return "kk";
+    case LANG_KHMER: return "km";
+    case LANG_KANNADA: return "kn";
+    case LANG_KOREAN: return "ko";
+    case LANG_KASHMIRI: return "ks";
+    case LANG_LAO: return "lo";
+    case LANG_LITHUANIAN: return "lt";
+    case LANG_LATVIAN: return "lv";
+    case LANG_MACEDONIAN: return "mk";
+    case LANG_MALAYALAM: return "ml";
+    case LANG_MONGOLIAN: return "mn";
+    case LANG_MARATHI: return "mr";
+    case LANG_MALAY: return "ms";
+    case LANG_MALTESE: return "mt";
+    case LANG_NEPALI: return "ne";
+    case LANG_DUTCH: return "nl";
+    case LANG_SOTHO: return "ns";
+    case LANG_ORIYA: return "or";
+    case LANG_PUNJABI: return "pa";
+    case LANG_POLISH: return "pl";
+    case LANG_PORTUGUESE: return "pt";
+    case LANG_ROMANSH: return "rm";
+    case LANG_ROMANIAN: return "ro";
+    case LANG_RUSSIAN: return "ru";
+    case LANG_KINYARWANDA: return "rw";
+    case LANG_SANSKRIT: return "sa";
+    case LANG_UPPER_SORBIAN: return "sb";
+    case LANG_SINDHI: return "sd";
+    case LANG_SLOVAK: return "sk";
+    case LANG_SLOVENIAN: return "sl";
+    case LANG_ALBANIAN: return "sq";
+    case LANG_SWEDISH: return "sv";
+    case LANG_SWAHILI: return "sw";
+    case LANG_TAMIL: return "ta";
+    case LANG_TELUGU: return "te";
+    case LANG_TAJIK: return "tg";
+    case LANG_THAI: return "th";
+    case LANG_TIGRIGNA: return "ti";
+    case LANG_TSWANA: return "tn";
+    case LANG_TURKISH: return "tr";
+    case LANG_TATAR: return "tt";
+    case LANG_UKRAINIAN: return "uk";
+    case LANG_URDU: return "ur";
+    case LANG_UZBEK: return "uz";
+    case LANG_VIETNAMESE: return "vi";
+    case LANG_XHOSA: return "xh";
+    case LANG_CHINESE: return "zh";
+    case LANG_ZULU: return "zu";
+    /* Special cases */
+    default:
+        switch (langid) {
+        case MAKELANGID(LANG_SERBIAN, 0x05): return "bs";
+        case MAKELANGID(LANG_SERBIAN, SUBLANG_DEFAULT): return "hr";
+        case MAKELANGID(LANG_NORWEGIAN, SUBLANG_NORWEGIAN_BOKMAL): return "nb";
+        case MAKELANGID(LANG_NORWEGIAN, SUBLANG_NORWEGIAN_NYNORSK): return "nn";
+        case MAKELANGID(LANG_SERBIAN, SUBLANG_SERBIAN_LATIN): return "sh";
+        case MAKELANGID(LANG_SERBIAN, SUBLANG_SERBIAN_CYRILLIC): return "sr";
+        default: return nullptr;
+        }
+    }
+}
+
+/* Here we collect the UI languages present on the system;
+ * MAX_LANGUAGES is certainly enough for that
+ */
+static const char *ui_langs[MAX_LANGUAGES];
+static int num_ui_langs = 0;
+
+static void add_ui_lang(char const * lang)
+{
+    if (lang != nullptr && num_ui_langs != SAL_N_ELEMENTS(ui_langs)) {
+        ui_langs[num_ui_langs++] = lang;
+    }
+}
+
+static BOOL CALLBACK
+enum_ui_lang_proc (LPTSTR language, LONG_PTR /* unused_lParam */)
+{
+    long langid = strtol(language, nullptr, 16);
+    if (langid > 0xFFFF)
+        return TRUE;
+    add_ui_lang(langid_to_string(static_cast<LANGID>(langid)));
+    if (num_ui_langs == SAL_N_ELEMENTS(ui_langs) )
+        return FALSE;
+    return TRUE;
+}
+
+static bool
+present_in_ui_langs(const char *lang)
+{
+    for (int i = 0; i < num_ui_langs; i++)
+    {
+        if (strchr (lang, '_') != nullptr)
+            if (memcmp (ui_langs[i], lang, std::min(strlen(ui_langs[i]), strlen(lang))) == 0)
+                return true;
+        if (strcmp (ui_langs[i], lang) == 0)
+            return true;
+    }
+    return false;
+}
+
+namespace {
+
+/* TODO-BCP47: unlimit this, and if possible change from '_' to '-' separator
+ * to ease things. */
+// XXX NOTE: the sizeof needs to follow what is accepted in
+// setup_native/source/packinfo/spellchecker_selection.pl
+struct InstallLocalized {
+    char lang[sizeof("lll_Ssss_CC_vvvvvvvv")];
+    bool install;
+};
+
+void addMatchingDictionaries(
+    char const * lang, InstallLocalized * dicts, int ndicts)
+{
+    for (int i = 0; i != SAL_N_ELEMENTS(setup_native::languageDictionaries);
+         ++i)
+    {
+        if (strcmp(lang, setup_native::languageDictionaries[i].language) == 0) {
+            for (char const * const * p = setup_native::languageDictionaries[i].
+                     dictionaries;
+                 *p != nullptr; ++p)
+            {
+                for (int j = 0; j != ndicts; ++j) {
+                    if (_stricmp(*p, dicts[j].lang) == 0) {
+                        dicts[j].install = true;
+                        break;
+                    }
+                }
+            }
+            break;
+        }
+    }
+}
+
+}
+
+extern "C" __declspec(dllexport) UINT __stdcall SelectLanguage( MSIHANDLE handle )
+{
+    char feature[100];
+    MSIHANDLE database, view, record;
+    DWORD length;
+    int nlangs = 0;
+    InstallLocalized langs[MAX_LANGUAGES];
+    int ndicts = 0;
+    InstallLocalized dicts[MAX_LANGUAGES];
+
+    database = MsiGetActiveDatabase(handle);
+
+    if (MsiDatabaseOpenViewA(database, "SELECT Feature from Feature WHERE Feature_Parent = 'gm_Langpack_Languageroot'", &view) != ERROR_SUCCESS) {
+        MsiCloseHandle(database);
+        return ERROR_SUCCESS;
+    }
+
+    if (MsiViewExecute(view, 0) != ERROR_SUCCESS) {
+        MsiCloseHandle(view);
+        MsiCloseHandle(database);
+        return ERROR_SUCCESS;
+    }
+
+    while (nlangs < MAX_LANGUAGES &&
+           MsiViewFetch(view, &record) == ERROR_SUCCESS) {
+        length = sizeof(feature);
+        if (MsiRecordGetStringA(record, 1, feature, &length) != ERROR_SUCCESS) {
+            MsiCloseHandle(record);
+            MsiCloseHandle(view);
+            MsiCloseHandle(database);
+            return ERROR_SUCCESS;
+        }
+
+        /* Keep track of what langpacks are included in this installer.
+         */
+        strcpy(langs[nlangs].lang, feature + strlen("gm_Langpack_r_"));
+        langs[nlangs].install = false;
+        ++nlangs;
+
+        MsiCloseHandle(record);
+    }
+
+    MsiCloseHandle(view);
+
+    /* Keep track of what dictionaries are included in this installer:
+     */
+    if (MsiDatabaseOpenViewA(
+            database,
+            ("SELECT Feature from Feature WHERE"
+             " Feature_Parent = 'gm_Dictionaries'"),
+            &view)
+        == ERROR_SUCCESS)
+    {
+        if (MsiViewExecute(view, 0) == ERROR_SUCCESS) {
+            while (ndicts < MAX_LANGUAGES &&
+                   MsiViewFetch(view, &record) == ERROR_SUCCESS)
+            {
+                length = sizeof(feature);
+                if (MsiRecordGetStringA(record, 1, feature, &length)
+                    == ERROR_SUCCESS)
+                {
+                    if (strncmp(
+                            feature, "gm_r_ex_Dictionary_",
+                            strlen("gm_r_ex_Dictionary_"))
+                        == 0)
+                    {
+                        strcpy(
+                            dicts[ndicts].lang,
+                            feature + strlen("gm_r_ex_Dictionary_"));
+                        dicts[ndicts].install = false;
+                        ++ndicts;
+                    }
+                }
+                MsiCloseHandle(record);
+            }
+        }
+        MsiCloseHandle(view);
+    }
+
+    /* Keep track of what UI languages are relevant, either the ones explicitly
+     * requested with the UI_LANGS property, or all available on the system:
+     */
+    char* pVal = nullptr;
+    if ( (GetMsiPropA( handle, "UI_LANGS", &pVal )) && pVal ) {
+        char *str_ptr;
+        str_ptr = strtok(pVal, ",");
+        for(; str_ptr != nullptr ;) {
+            add_ui_lang(str_ptr);
+            str_ptr = strtok(nullptr, ",");
+        }
+    } else {
+        add_ui_lang(langid_to_string(GetSystemDefaultUILanguage()));
+        add_ui_lang(langid_to_string(LANGIDFROMLCID(GetThreadLocale())));
+            //TODO: are the above two explicit additions necessary, or will
+            // those values always be included in the below EnumUILanguages
+            // anyway?
+        if (GetMsiPropA(handle, "ProductLanguage", &pVal))
+        {
+            // This addition might refer to a language without an installed system language pack
+            // If the installer is run in this language, then this language is likely needed
+            long langid = strtol(pVal, nullptr, 10);
+            if (langid > 0xFFFF)
+                return TRUE;
+            add_ui_lang(langid_to_string(static_cast<LANGID>(langid)));
+        }
+        EnumUILanguagesA(enum_ui_lang_proc, 0, 0);
+    }
+
+    // If the set of langpacks that match any of the relevant UI languages is
+    // non-empty, select just those matching langpacks; otherwise, if an en_US
+    // langpack is included, select just that langpack (this happens if, e.g.,
+    // a multi-language en-US,de,es,fr,it,pt-BR installation set is installed on
+    // a Finnish Windows); otherwise, select all langpacks (this happens if,
+    // e.g., a single-language de installation set is installed on a Finnish
+    // Windows):
+    bool matches = false;
+    for (int i = 0; i < nlangs; i++) {
+        if (present_in_ui_langs(langs[i].lang)) {
+            langs[i].install = true;
+            matches = true;
+        }
+    }
+    if (!matches) {
+        for (int i = 0; i < nlangs; i++) {
+            if (strcmp(langs[i].lang, "en_US") == 0) {
+                langs[i].install = true;
+                matches = true;
+                break;
+            }
+        }
+        if (!matches) {
+            for (int i = 0; i < nlangs; i++) {
+                langs[i].install = true;
+            }
+        }
+    }
+
+    for (int i = 0; i < nlangs; i++) {
+        if (langs[i].install) {
+            addMatchingDictionaries(langs[i].lang, dicts, ndicts);
+        } else {
+            sprintf(feature, "gm_Langpack_r_%s", langs[i].lang);
+            MsiSetFeatureStateA(handle, feature, INSTALLSTATE_ABSENT);
+        }
+    }
+
+    // Select just those dictionaries that match any of the selected langpacks:
+    for (int i = 0; i != ndicts; ++i) {
+        if (!dicts[i].install) {
+            sprintf(feature, "gm_r_ex_Dictionary_%s", dicts[i].lang);
+            MsiSetFeatureStateA(handle, feature, INSTALLSTATE_ABSENT);
+        }
+    }
+
+    MsiCloseHandle(database);
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/sellang/sellang.def b/setup_native/source/win32/customactions/sellang/sellang.def
new file mode 100644
index 0000000000..8d3c4d44cd
--- /dev/null
+++ b/setup_native/source/win32/customactions/sellang/sellang.def
@@ -0,0 +1,4 @@
+LIBRARY		"sellangmsi.dll"
+EXPORTS
+			SelectLanguage
+			SortTree
\ No newline at end of file
diff --git a/setup_native/source/win32/customactions/sellang/sorttree.cxx b/setup_native/source/win32/customactions/sellang/sorttree.cxx
new file mode 100644
index 0000000000..cb44675b90
--- /dev/null
+++ b/setup_native/source/win32/customactions/sellang/sorttree.cxx
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <msi.h>
+#include <commctrl.h>
+
+extern "C" __declspec(dllexport) UINT __stdcall SortTree(MSIHANDLE)
+{
+    // Sort items (languages) in SelectionTree control, fdo#46355
+
+    HWND hwndMSI = FindWindowW(L"MsiDialogCloseClass", nullptr);
+    if (hwndMSI == nullptr)
+    {
+        OutputDebugStringW(L"SortTree: MsiDialogCloseClass not found\n");
+        return ERROR_SUCCESS;
+    }
+    HWND hwndTV = FindWindowExW(hwndMSI, nullptr, L"SysTreeView32", nullptr);
+    if (hwndTV == nullptr)
+    {
+        OutputDebugStringW(L"SortTree: SysTreeView32 not found\n");
+        return ERROR_SUCCESS;
+    }
+    HTREEITEM optional = TreeView_GetRoot(hwndTV);
+    if (optional == nullptr)
+    {
+        OutputDebugStringW(L"SortTree: Optional Components branch not found\n");
+        return ERROR_SUCCESS;
+    }
+    HTREEITEM dicts = TreeView_GetChild(hwndTV, optional);
+    if (dicts == nullptr)
+    {
+        OutputDebugStringW(L"SortTree: Dictionaries branch not found\n");
+        return ERROR_SUCCESS;
+    }
+    TreeView_SortChildren(hwndTV, dicts, TRUE);
+    HTREEITEM langs = TreeView_GetNextSibling(hwndTV, optional);
+    if (langs == nullptr)
+    {
+        OutputDebugStringW(L"SortTree: Additional UI Languages branch not found\n");
+        return ERROR_SUCCESS;
+    }
+    TreeView_SortChildren(hwndTV, langs, TRUE);
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/shellextensions/checkdirectory.cxx b/setup_native/source/win32/customactions/shellextensions/checkdirectory.cxx
new file mode 100644
index 0000000000..8e4166b0d9
--- /dev/null
+++ b/setup_native/source/win32/customactions/shellextensions/checkdirectory.cxx
@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "shlxtmsi.hxx"
+
+#include <malloc.h>
+#include <assert.h>
+
+#include <queue>
+#include <stdio.h>
+
+#include <systools/win32/uwinapi.h>
+#include "../tools/seterror.hxx"
+
+extern "C" __declspec(dllexport) UINT __stdcall CheckInstallDirectory(MSIHANDLE handle)
+{
+    std::wstring sInstallPath = GetMsiPropertyW(handle, L"INSTALLLOCATION");
+    std::wstring sOfficeHostnamePath = GetMsiPropertyW(handle, L"OFFICEDIRHOSTNAME");
+
+    // MessageBoxW(NULL, sInstallPath.c_str(), L"DEBUG", MB_OK);
+
+    // unsetting all properties
+
+    UnsetMsiPropertyW(handle, L"DIRECTORY_NOT_EMPTY");
+
+    // 1. Searching for file setup.ini
+
+    std::wstring sSetupIniPath = sInstallPath + sOfficeHostnamePath + L"\\program\\setup.ini";
+
+    WIN32_FIND_DATAW data;
+    HANDLE hdl = FindFirstFileW(sSetupIniPath.c_str(), &data);
+
+    // std::wstring mystr = L"Searching for " + sSetupIniPath;
+    // MessageBoxW(NULL, mystr.c_str(), L"DEBUG", MB_OK);
+
+    if (IsValidHandle(hdl))
+    {
+        // setup.ini found -> directory cannot be used for installation.
+        SetMsiPropertyW(handle, L"DIRECTORY_NOT_EMPTY", L"1");
+        SetMsiErrorCode(MSI_ERROR_DIRECTORY_NOT_EMPTY);
+        // std::wstring notEmptyStr = L"Directory is not empty. Please choose another installation directory.";
+        // std::wstring notEmptyTitle = L"Directory not empty";
+        // MessageBoxW(NULL, notEmptyStr.c_str(), notEmptyTitle.c_str(), MB_OK);
+        FindClose(hdl);
+    }
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/shellextensions/checkpatches.cxx b/setup_native/source/win32/customactions/shellextensions/checkpatches.cxx
new file mode 100644
index 0000000000..d573161fb1
--- /dev/null
+++ b/setup_native/source/win32/customactions/shellextensions/checkpatches.cxx
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "shlxtmsi.hxx"
+#include <strsafe.h>
+#include <systools/win32/uwinapi.h>
+
+#ifdef DEBUG
+inline void OutputDebugStringFormatW( PCWSTR pFormat, ... )
+{
+    WCHAR   buffer[1024];
+    va_list args;
+
+    va_start( args, pFormat );
+    StringCchVPrintfW( buffer, std::size(buffer), pFormat, args );
+    OutputDebugStringW( buffer );
+    va_end(args);
+}
+#else
+static void OutputDebugStringFormatW( PCWSTR, ... )
+{
+}
+#endif
+
+extern "C" __declspec(dllexport) UINT __stdcall CheckPatchList( MSIHANDLE handle )
+{
+    std::wstring sPatchList = GetMsiPropertyW( handle, L"PATCH" );
+    std::wstring sRequiredPatch = GetMsiPropertyW( handle, L"PREREQUIREDPATCH" );
+
+    OutputDebugStringFormatW( L"CheckPatchList called with PATCH=%s and PRQ=%s\n", sPatchList.c_str(), sRequiredPatch.c_str() );
+
+    if ( ( sPatchList.length() != 0 ) && ( sRequiredPatch.length() != 0 ) )
+    {
+        if ( wcsstr( sPatchList.c_str(), sRequiredPatch.c_str() ) )
+        {
+            SetMsiPropertyW( handle, L"IGNOREPREREQUIREDPATCH", L"1" );
+            OutputDebugStringFormatW( L"Set Property IgnorePrerequiredPatch!\n" );
+        }
+    }
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/shellextensions/completeinstallpath.cxx b/setup_native/source/win32/customactions/shellextensions/completeinstallpath.cxx
new file mode 100644
index 0000000000..787041ed8f
--- /dev/null
+++ b/setup_native/source/win32/customactions/shellextensions/completeinstallpath.cxx
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "shlxtmsi.hxx"
+
+#include <malloc.h>
+
+extern "C" __declspec(dllexport) UINT __stdcall CompleteInstallPath( MSIHANDLE handle )
+{
+    // This CustomAction is necessary for updates from OOo 3.0, OOo 3.1 and OOo 3.2 to versions
+    // OOo 3.3 or later. This is caused by a change of INSTALLLOCATION, that starting with OOo 3.3
+    // contains the name of the product again (instead of only "c:\program files"). Unfortunately
+    // this causes in an update installation, that INSTALLLOCATION is set to "c:\program files",
+    // so that in an OOo 3.3 or later, the directory "program" or "share" are directly created
+    // below "c:\program files".
+
+    HKEY    hKey;
+
+    // Reading property OFFICEDIRHOSTNAME_, that contains the part of the path behind
+    // the program files folder.
+
+    std::wstring   sInstallLocation = GetMsiPropertyW( handle, L"INSTALLLOCATION" );
+    std::wstring   sOfficeDirHostname = GetMsiPropertyW( handle, L"OFFICEDIRHOSTNAME_" );
+
+    // If sInstallLocation ends with (contains) the string sOfficeDirHostname,
+    // INSTALLLOCATION is good and nothing has to be done here.
+
+    bool pathCompletionRequired = true;
+
+    if ( wcsstr( sInstallLocation.c_str(), sOfficeDirHostname.c_str() ) )
+    {
+        pathCompletionRequired = false;  // nothing to do
+    }
+
+    // If the path INSTALLLOCATION does not end with this string, INSTALLLOCATION is maybe
+    // transferred from an OOo 3.0, OOo 3.1 and OOo 3.2 and need to be changed therefore.
+
+    if ( pathCompletionRequired )
+    {
+        std::wstring   sManufacturer = GetMsiPropertyW( handle, L"Manufacturer" );
+        std::wstring   sDefinedName = GetMsiPropertyW( handle, L"DEFINEDPRODUCT" );
+        std::wstring   sUpgradeCode = GetMsiPropertyW( handle, L"UpgradeCode" );
+
+        // sUpdateVersion can be "3.0", "3.1" or "3.2"
+
+        std::wstring   sProductKey30 = L"Software\\" + sManufacturer + L"\\" + sDefinedName +
+                                            L"\\" L"3.0" L"\\" + sUpgradeCode;
+
+        std::wstring   sProductKey31 = L"Software\\" + sManufacturer + L"\\" + sDefinedName +
+                                            L"\\" L"3.1" L"\\" + sUpgradeCode;
+
+        std::wstring   sProductKey32 = L"Software\\" + sManufacturer + L"\\" + sDefinedName +
+                                            L"\\" L"3.2" L"\\" + sUpgradeCode;
+
+        bool oldVersionExists = false;
+
+        if ( ERROR_SUCCESS == RegOpenKeyW( HKEY_CURRENT_USER,  sProductKey30.c_str(), &hKey ) )
+        {
+            oldVersionExists = true;
+            RegCloseKey( hKey );
+        }
+        else if ( ERROR_SUCCESS == RegOpenKeyW( HKEY_CURRENT_USER,  sProductKey31.c_str(), &hKey ) )
+        {
+            oldVersionExists = true;
+            RegCloseKey( hKey );
+        }
+        else if ( ERROR_SUCCESS == RegOpenKeyW( HKEY_CURRENT_USER,  sProductKey32.c_str(), &hKey ) )
+        {
+            oldVersionExists = true;
+            RegCloseKey( hKey );
+        }
+        else if ( ERROR_SUCCESS == RegOpenKeyW( HKEY_LOCAL_MACHINE,  sProductKey30.c_str(), &hKey ) )
+        {
+            oldVersionExists = true;
+            RegCloseKey( hKey );
+        }
+        else if ( ERROR_SUCCESS == RegOpenKeyW( HKEY_LOCAL_MACHINE,  sProductKey31.c_str(), &hKey ) )
+        {
+            oldVersionExists = true;
+            RegCloseKey( hKey );
+        }
+        else if ( ERROR_SUCCESS == RegOpenKeyW( HKEY_LOCAL_MACHINE,  sProductKey32.c_str(), &hKey ) )
+        {
+            oldVersionExists = true;
+            RegCloseKey( hKey );
+        }
+
+        if ( oldVersionExists )
+        {
+            // Adding the new path content sOfficeDirHostname
+            sInstallLocation += sOfficeDirHostname;
+            // Setting the new property value
+            MsiSetPropertyW(handle, L"INSTALLLOCATION", sInstallLocation.c_str());
+        }
+    }
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/shellextensions/migrateinstallpath.cxx b/setup_native/source/win32/customactions/shellextensions/migrateinstallpath.cxx
new file mode 100644
index 0000000000..10c817169a
--- /dev/null
+++ b/setup_native/source/win32/customactions/shellextensions/migrateinstallpath.cxx
@@ -0,0 +1,96 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "shlxtmsi.hxx"
+#include <algorithm>
+#include <sstream>
+#include <systools/win32/uwinapi.h>
+
+extern "C" __declspec(dllexport) UINT __stdcall MigrateInstallPath(MSIHANDLE handle)
+{
+    std::wstring sInstDir = GetMsiPropertyW(handle, L"INSTALLLOCATION");
+    if (!sInstDir.empty())
+        return ERROR_SUCCESS; // Don't overwrite explicitly set value
+
+    auto RegValue = [](HKEY hRoot, const WCHAR* sKey, const WCHAR* sVal) {
+        std::wstring sResult;
+        WCHAR buf[32767]; // max longpath
+        DWORD bufsize = sizeof(buf); // yes, it is the number of bytes
+        if (RegGetValueW(hRoot, sKey, sVal, RRF_RT_REG_SZ, nullptr, buf, &bufsize) == ERROR_SUCCESS)
+            sResult = buf; // RegGetValueW null-terminates strings
+
+        return sResult;
+    };
+
+    const std::wstring sManufacturer = GetMsiPropertyW( handle, L"Manufacturer" );
+    const std::wstring sDefinedName = GetMsiPropertyW( handle, L"DEFINEDPRODUCT" );
+    const std::wstring sUpdateVersion = GetMsiPropertyW( handle, L"DEFINEDVERSION" );
+    const std::wstring sUpgradeCode = GetMsiPropertyW( handle, L"UpgradeCode" );
+    const std::wstring sBrandPackageVersion = GetMsiPropertyW(handle, L"BRANDPACKAGEVERSION");
+
+    std::wstring   sKey = L"Software\\" + sManufacturer + L"\\" + sDefinedName +
+                                        L"\\" + sUpdateVersion + L"\\" + sUpgradeCode;
+
+    sInstDir = RegValue(HKEY_CURRENT_USER, sKey.c_str(), L"INSTALLLOCATION");
+    if (sInstDir.empty())
+        sInstDir = RegValue(HKEY_LOCAL_MACHINE, sKey.c_str(), L"INSTALLLOCATION");
+    // See #i93032# for layers description
+    if (sInstDir.empty())
+    {
+        sKey = L"Software\\LibreOffice\\Layers\\" + sDefinedName + L"\\" + sBrandPackageVersion;
+        sInstDir = RegValue(HKEY_CURRENT_USER, sKey.c_str(), L"INSTALLLOCATION");
+    }
+    if (sInstDir.empty())
+    {
+        sKey = L"Software\\LibreOffice\\Layers_\\" + sDefinedName + L"\\" + sBrandPackageVersion;
+        sInstDir = RegValue(HKEY_CURRENT_USER, sKey.c_str(), L"INSTALLLOCATION");
+    }
+    if (sInstDir.empty())
+    {
+        sKey = L"Software\\LibreOffice\\Layers\\" + sDefinedName + L"\\" + sBrandPackageVersion;
+        sInstDir = RegValue(HKEY_LOCAL_MACHINE, sKey.c_str(), L"INSTALLLOCATION");
+    }
+    if (sInstDir.empty())
+    {
+        sKey = L"Software\\LibreOffice\\Layers_\\" + sDefinedName + L"\\" + sBrandPackageVersion;
+        sInstDir = RegValue(HKEY_LOCAL_MACHINE, sKey.c_str(), L"INSTALLLOCATION");
+    }
+    if (sInstDir.empty())
+    {
+        std::wistringstream sOlds{ GetMsiPropertyW(handle, L"OLDPRODUCTS") };
+        std::wstring sOld;
+        while (std::getline(sOlds, sOld, L';'))
+        {
+            if (sOld.empty())
+                continue;
+            sKey = L"Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\" + sOld;
+            sInstDir = RegValue(HKEY_LOCAL_MACHINE, sKey.c_str(), L"InstallLocation");
+            if (!sInstDir.empty())
+                break;
+        }
+    }
+
+    if (!sInstDir.empty())
+        MsiSetPropertyW(handle, L"INSTALLLOCATION", sInstDir.c_str());
+
+    return ERROR_SUCCESS;
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/shellextensions/shlxtmsi.def b/setup_native/source/win32/customactions/shellextensions/shlxtmsi.def
new file mode 100644
index 0000000000..57b6aa154f
--- /dev/null
+++ b/setup_native/source/win32/customactions/shellextensions/shlxtmsi.def
@@ -0,0 +1,9 @@
+LIBRARY		"shlxtmsi.dll"
+EXPORTS
+			CheckInstallDirectory
+			CheckPatchList
+			CompleteInstallPath
+			MigrateInstallPath
+			InstallStartmenuFolderIcon
+			DeinstallStartmenuFolderIcon
+			SetProductInstallMode
diff --git a/setup_native/source/win32/customactions/shellextensions/shlxtmsi.hxx b/setup_native/source/win32/customactions/shellextensions/shlxtmsi.hxx
new file mode 100644
index 0000000000..3a08060bee
--- /dev/null
+++ b/setup_native/source/win32/customactions/shellextensions/shlxtmsi.hxx
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SETUP_NATIVE_SOURCE_WIN32_CUSTOMACTIONS_SHELLEXTENSIONS_SHLXTMSI_HXX
+#define INCLUDED_SETUP_NATIVE_SOURCE_WIN32_CUSTOMACTIONS_SHELLEXTENSIONS_SHLXTMSI_HXX
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <msiquery.h>
+
+#include <string>
+
+static inline std::wstring GetMsiPropertyW( MSIHANDLE handle, const std::wstring& sProperty )
+{
+    std::wstring   result;
+    WCHAR szDummy[1] = L"";
+    DWORD nChars = 0;
+
+    if ( MsiGetPropertyW( handle, sProperty.c_str(), szDummy, &nChars ) == ERROR_MORE_DATA )
+    {
+        DWORD nBytes = ++nChars * sizeof(WCHAR);
+        PWSTR buffer = static_cast<PWSTR>(_alloca(nBytes));
+        ZeroMemory( buffer, nBytes );
+        MsiGetPropertyW( handle, sProperty.c_str(), buffer, &nChars );
+        result = buffer;
+    }
+
+    return  result;
+}
+
+static inline void SetMsiPropertyW( MSIHANDLE handle, const std::wstring& sProperty, const std::wstring& sValue )
+{
+    MsiSetPropertyW( handle, sProperty.c_str(), sValue.c_str() );
+}
+
+static inline void UnsetMsiPropertyW( MSIHANDLE handle, const std::wstring& sProperty )
+{
+    MsiSetPropertyW( handle, sProperty.c_str(), nullptr );
+}
+
+#endif // INCLUDED_SETUP_NATIVE_SOURCE_WIN32_CUSTOMACTIONS_SHELLEXTENSIONS_SHLXTMSI_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/shellextensions/startmenuicon.cxx b/setup_native/source/win32/customactions/shellextensions/startmenuicon.cxx
new file mode 100644
index 0000000000..6e95c6e1e6
--- /dev/null
+++ b/setup_native/source/win32/customactions/shellextensions/startmenuicon.cxx
@@ -0,0 +1,63 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "shlxtmsi.hxx"
+
+#include <malloc.h>
+
+/*
+    Called during installation to customize the start menu folder icon.
+    See: http://msdn.microsoft.com/library/en-us/shellcc/platform/shell/programmersguide/shell_basics/shell_basics_extending/custom.asp
+*/
+extern "C" __declspec(dllexport) UINT __stdcall InstallStartmenuFolderIcon( MSIHANDLE handle )
+{
+    std::wstring sOfficeMenuFolder = GetMsiPropertyW( handle, L"OfficeMenuFolder" );
+    std::wstring sDesktopFile = sOfficeMenuFolder + L"Desktop.ini";
+
+    // at the moment there exists no Vista Icon, so we use the default folder icon.
+    // add the icon into desktop/util/verinfo.rc
+
+    // The value '0' is to avoid a message like "You Are Deleting a System Folder" warning when deleting or moving the folder.
+    WritePrivateProfileStringW(
+        L".ShellClassInfo",
+        L"ConfirmFileOp",
+        L"0",
+        sDesktopFile.c_str() );
+
+    SetFileAttributesW( sDesktopFile.c_str(), FILE_ATTRIBUTE_HIDDEN );
+    SetFileAttributesW( sOfficeMenuFolder.c_str(), FILE_ATTRIBUTE_SYSTEM );
+
+
+    return ERROR_SUCCESS;
+}
+
+extern "C" __declspec(dllexport) UINT __stdcall DeinstallStartmenuFolderIcon(MSIHANDLE handle)
+{
+    std::wstring sOfficeMenuFolder = GetMsiPropertyW( handle, L"OfficeMenuFolder" );
+    std::wstring sDesktopFile = sOfficeMenuFolder + L"Desktop.ini";
+
+    SetFileAttributesW( sDesktopFile.c_str(), FILE_ATTRIBUTE_NORMAL );
+    DeleteFileW( sDesktopFile.c_str() );
+
+    SetFileAttributesW( sOfficeMenuFolder.c_str(), FILE_ATTRIBUTE_NORMAL );
+
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/shellextensions/upgrade.cxx b/setup_native/source/win32/customactions/shellextensions/upgrade.cxx
new file mode 100644
index 0000000000..c06eb7a05b
--- /dev/null
+++ b/setup_native/source/win32/customactions/shellextensions/upgrade.cxx
@@ -0,0 +1,158 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "shlxtmsi.hxx"
+
+#include <malloc.h>
+#include <assert.h>
+
+namespace
+{
+    // The provided GUID must be without surrounding '{}'
+    std::wstring GetGuidPart(const std::wstring& guid, int index)
+    {
+        assert((guid.length() == 36) && "No GUID or wrong format!");
+        assert(((index > -1) && (index < 5)) && "Out of range!");
+
+        if (index == 0) return guid.substr(0, 8);
+        if (index == 1) return guid.substr(9, 4);
+        if (index == 2) return guid.substr(14, 4);
+        if (index == 3) return guid.substr(19, 4);
+        if (index == 4) return guid.substr(24, 12);
+
+        return std::wstring();
+    }
+
+    void Swap(wchar_t* p1, wchar_t* p2)
+    {
+        wchar_t tmp = *p1;
+        *p1 = *p2;
+        *p2 = tmp;
+    }
+
+    std::wstring Invert(const std::wstring& str)
+    {
+        wchar_t* buff = static_cast<wchar_t*>(_alloca(str.length()*sizeof(wchar_t)));
+        wcsncpy(buff, str.c_str(), str.length());
+
+        wchar_t* front = buff;
+        wchar_t* back = buff + str.length() - 1;
+
+        while (front < back)
+            Swap(front++, back--);
+
+        return std::wstring(buff, str.length());
+    }
+
+    // Convert the upgrade code (which is a GUID) according
+    // to the way the windows installer does when writing it
+    // to the registry
+    // The first 8 bytes will be inverted, from the last
+    // 8 bytes always the nibbles will be inverted for further
+    // details look in the MSDN under compressed registry keys
+    std::wstring ConvertGuid(const std::wstring& guid)
+    {
+        std::wstring convertedGuid;
+
+        std::wstring part = GetGuidPart(guid, 0);
+        convertedGuid = Invert(part);
+
+        part = GetGuidPart(guid, 1);
+        convertedGuid += Invert(part);
+
+        part = GetGuidPart(guid, 2);
+        convertedGuid += Invert(part);
+
+        part = GetGuidPart(guid, 3);
+        convertedGuid += Invert(part.substr(0, 2));
+        convertedGuid += Invert(part.substr(2, 2));
+
+        part = GetGuidPart(guid, 4);
+        int pos = 0;
+        for (int i = 0; i < 6; i++)
+        {
+            convertedGuid += Invert(std::wstring(part.c_str() + pos, 2));
+            pos += 2;
+        }
+        return convertedGuid;
+    }
+
+    bool IsSetMsiPropertyW(MSIHANDLE handle, const std::wstring& sProperty)
+    {
+        return (GetMsiPropertyW(handle, sProperty).length() > 0);
+    }
+
+    void SetMsiPropertyW(MSIHANDLE handle, const std::wstring& sProperty)
+    {
+        MsiSetPropertyW(handle, sProperty.c_str(), L"1");
+    }
+
+    bool RegistryKeyHasUpgradeSubKey(
+        HKEY hRootKey, const std::wstring& regKey, const std::wstring& upgradeKey)
+    {
+        HKEY hKey;
+        if (RegOpenKeyW(hRootKey, regKey.c_str(), &hKey) == ERROR_SUCCESS)
+        {
+            DWORD nSubKeys;
+            DWORD lLongestSubKey;
+
+            if (RegQueryInfoKeyW(
+                hKey, nullptr, nullptr, nullptr, &nSubKeys, &lLongestSubKey, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr) == ERROR_SUCCESS)
+            {
+                LPWSTR buffer = static_cast<LPWSTR>(_alloca((lLongestSubKey + 1)*sizeof(WCHAR)));
+
+                for (DWORD i = 0; i < nSubKeys; i++)
+                {
+                    LONG ret = RegEnumKeyW(hKey, i, buffer, lLongestSubKey + 1);
+                    if ((ret == ERROR_SUCCESS) && (buffer == upgradeKey))
+                        return true;
+                }
+            }
+        }
+        return false;
+    }
+} // namespace
+
+extern "C" __declspec(dllexport) UINT __stdcall SetProductInstallMode(MSIHANDLE handle)
+{
+    std::wstring upgradeCode = GetMsiPropertyW(handle, L"UpgradeCode");
+    upgradeCode = ConvertGuid(std::wstring(upgradeCode.c_str() + 1, upgradeCode.length() - 2));
+
+    // MessageBoxW(NULL, upgradeCode.c_str(), "Debug", MB_OK);
+
+    if (RegistryKeyHasUpgradeSubKey(
+        HKEY_CURRENT_USER,
+        L"Software\\Microsoft\\Installer\\UpgradeCodes",
+        upgradeCode) && IsSetMsiPropertyW(handle, L"ALLUSERS"))
+    {
+        UnsetMsiPropertyW(handle, L"ALLUSERS");
+        // MessageBoxW(NULL, L"ALLUSERS removed", L"DEBUG", MB_OK);
+    }
+    else if (RegistryKeyHasUpgradeSubKey(
+             HKEY_LOCAL_MACHINE,
+             L"Software\\Classes\\Installer\\UpgradeCodes",
+             upgradeCode) && !IsSetMsiPropertyW(handle, L"ALLUSERS"))
+    {
+        SetMsiPropertyW(handle, L"ALLUSERS");
+        // MessageBoxW(NULL, L"ALLUSERS set", L"DEBUG", MB_OK);
+    }
+    return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/tools/checkversion.cxx b/setup_native/source/win32/customactions/tools/checkversion.cxx
new file mode 100644
index 0000000000..3f0b30f3ce
--- /dev/null
+++ b/setup_native/source/win32/customactions/tools/checkversion.cxx
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <msiquery.h>
+
+#include <cassert>
+#include <string.h>
+#include <malloc.h>
+#include <stdio.h>
+#include <strsafe.h>
+
+#include "seterror.hxx"
+
+
+static bool GetMsiPropW( MSIHANDLE hMSI, const wchar_t* pPropName, wchar_t** ppValue )
+{
+    DWORD sz = 0;
+    if ( MsiGetPropertyW( hMSI, pPropName, const_cast<wchar_t *>(L""), &sz ) == ERROR_MORE_DATA )
+    {
+        sz++;
+        DWORD nbytes = sz * sizeof( wchar_t );
+        wchar_t* buff = static_cast<wchar_t*>( malloc( nbytes ) );
+        assert(buff); // Don't handle OOM conditions
+        ZeroMemory( buff, nbytes );
+        MsiGetPropertyW( hMSI, pPropName, buff, &sz );
+        *ppValue = buff;
+
+        return true;
+    }
+
+    return false;
+}
+
+
+#ifdef DEBUG
+inline void OutputDebugStringFormatW( PCWSTR pFormat, ... )
+{
+    WCHAR    buffer[1024];
+    va_list  args;
+
+    va_start( args, pFormat );
+    StringCchVPrintfW( buffer, sizeof(buffer)/sizeof(buffer[0]), pFormat, args );
+    OutputDebugStringW( buffer );
+    va_end(args);
+}
+#else
+static void OutputDebugStringFormatW( PCWSTR, ... )
+{
+}
+#endif
+
+
+extern "C" __declspec(dllexport) UINT __stdcall CheckVersions( MSIHANDLE hMSI )
+{
+    // MessageBoxW(NULL, L"CheckVersions", L"Information", MB_OK | MB_ICONINFORMATION);
+
+    wchar_t* pVal = nullptr;
+
+    if ( GetMsiPropW( hMSI, L"NEWPRODUCTS", &pVal ) && pVal )
+    {
+        OutputDebugStringFormatW( L"DEBUG: NEWPRODUCTS found [%s]", pVal );
+        if ( *pVal != 0 )
+            SetMsiErrorCode( MSI_ERROR_NEW_VERSION_FOUND );
+        free( pVal );
+    }
+    pVal = nullptr;
+    if ( GetMsiPropW( hMSI, L"OLDPRODUCTS", &pVal ) && pVal )
+    {
+        OutputDebugStringFormatW( L"DEBUG: OLDPRODUCTS found [%s]", pVal );
+        if ( *pVal != 0 )
+            SetMsiErrorCode( MSI_ERROR_OLD_VERSION_FOUND );
+        free( pVal );
+    }
+    pVal = nullptr;
+
+    return ERROR_SUCCESS;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/tools/seterror.cxx b/setup_native/source/win32/customactions/tools/seterror.cxx
new file mode 100644
index 0000000000..f1800ffb7f
--- /dev/null
+++ b/setup_native/source/win32/customactions/tools/seterror.cxx
@@ -0,0 +1,84 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+#include <string.h>
+#include <malloc.h>
+#include <stdio.h>
+#include <strsafe.h>
+
+#include "seterror.hxx"
+
+
+#ifdef DEBUG
+inline void OutputDebugStringFormatW( PCWSTR pFormat, ... )
+{
+    WCHAR    buffer[1024];
+    va_list  args;
+
+    va_start( args, pFormat );
+    StringCchVPrintfW( buffer, sizeof(buffer)/sizeof(buffer[0]), pFormat, args );
+    OutputDebugStringW( buffer );
+    va_end(args);
+}
+#else
+static void OutputDebugStringFormatW( PCWSTR, ... )
+{
+}
+#endif
+
+
+void SetMsiErrorCode( int nErrorCode )
+{
+    const WCHAR sMemMapName[] = L"Global\\MsiErrorObject";
+
+    HANDLE hMapFile;
+    int *pBuf;
+
+    hMapFile = OpenFileMappingW(
+                    FILE_MAP_ALL_ACCESS,    // read/write access
+                    FALSE,                  // do not inherit the name
+                    sMemMapName );          // name of mapping object
+
+    if ( hMapFile == nullptr )                 // can not set error code
+    {
+        OutputDebugStringFormatW( L"Could not open map file (%d).\n", GetLastError() );
+        return;
+    }
+
+    pBuf = static_cast<int*>(MapViewOfFile( hMapFile,   // handle to map object
+                        FILE_MAP_ALL_ACCESS, // read/write permission
+                        0,
+                        0,
+                        sizeof( int ) ));
+    if ( pBuf )
+    {
+        *pBuf = nErrorCode;
+        UnmapViewOfFile( pBuf );
+    }
+    else
+        OutputDebugStringFormatW( L"Could not map view of file (%d).\n", GetLastError() );
+
+    CloseHandle( hMapFile );
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/tools/seterror.hxx b/setup_native/source/win32/customactions/tools/seterror.hxx
new file mode 100644
index 0000000000..010af4a8c9
--- /dev/null
+++ b/setup_native/source/win32/customactions/tools/seterror.hxx
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SETUP_NATIVE_SOURCE_WIN32_CUSTOMACTIONS_TOOLS_SETERROR_HXX
+#define INCLUDED_SETUP_NATIVE_SOURCE_WIN32_CUSTOMACTIONS_TOOLS_SETERROR_HXX
+
+
+// list of own error codes
+
+#define MSI_ERROR_NEW_VERSION_FOUND         9010
+#define MSI_ERROR_OLD_VERSION_FOUND         9012
+
+#define MSI_ERROR_DIRECTORY_NOT_EMPTY       9030
+
+
+void SetMsiErrorCode( int nErrorCode );
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/tools/sn_tools.def b/setup_native/source/win32/customactions/tools/sn_tools.def
new file mode 100644
index 0000000000..3c881861b8
--- /dev/null
+++ b/setup_native/source/win32/customactions/tools/sn_tools.def
@@ -0,0 +1,3 @@
+LIBRARY		"sn_tools.dll"
+EXPORTS
+			CheckVersions
\ No newline at end of file