3 files changed, 11 insertions, 3 deletions
diff --git a/browser/installer/windows/nsis/defines.nsi.in b/browser/installer/windows/nsis/defines.nsi.in
index 8995066b02..f38c0da016 100644
--- a/browser/installer/windows/nsis/defines.nsi.in
+++ b/browser/installer/windows/nsis/defines.nsi.in
@@ -54,11 +54,11 @@
 !define IDI_PBICON_PB_EXE_ZERO_BASED "0"
 
 !define CERTIFICATE_NAME            "Mozilla Corporation"
-!define CERTIFICATE_ISSUER          "DigiCert SHA2 Assured ID Code Signing CA"
+!define CERTIFICATE_ISSUER          "DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1"
 ; Changing the name or issuer requires us to have both the old and the new
 ;  in the registry at the same time, temporarily.
 !define CERTIFICATE_NAME_PREVIOUS   "Mozilla Corporation"
-!define CERTIFICATE_ISSUER_PREVIOUS "DigiCert Assured ID Code Signing CA-1"
+!define CERTIFICATE_ISSUER_PREVIOUS "DigiCert SHA2 Assured ID Code Signing CA"
 
 # LSP_CATEGORIES is the permitted LSP categories for the application. Each LSP
 # category value is ANDed together to set multiple permitted categories.
diff --git a/browser/installer/windows/nsis/maintenanceservice_installer.nsi b/browser/installer/windows/nsis/maintenanceservice_installer.nsi
index ff87ef0839..39a4000c5b 100644
--- a/browser/installer/windows/nsis/maintenanceservice_installer.nsi
+++ b/browser/installer/windows/nsis/maintenanceservice_installer.nsi
@@ -217,7 +217,7 @@ Section "MaintenanceService"
   ; These keys are used to bypass the installation dir is a valid installation
   ; check from the service so that tests can be run.
   ; WriteRegStr HKLM "${FallbackKey}\0" "name" "Mozilla Corporation"
-  ; WriteRegStr HKLM "${FallbackKey}\0" "issuer" "DigiCert SHA2 Assured ID Code Signing CA"
+  ; WriteRegStr HKLM "${FallbackKey}\0" "issuer" "DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1"
   ${If} ${RunningX64}
   ${OrIf} ${IsNativeARM64}
     SetRegView lastused
diff --git a/browser/installer/windows/nsis/shared.nsh b/browser/installer/windows/nsis/shared.nsh
index 2df14e8cf9..3c1610ee3d 100755
--- a/browser/installer/windows/nsis/shared.nsh
+++ b/browser/installer/windows/nsis/shared.nsh
@@ -130,6 +130,14 @@
     ${EndIf}
   ${EndIf}
 
+  ClearErrors
+  WriteRegStr HKLM "Software\Mozilla" "${BrandShortName}InstallerTest" "Write Test"
+  ${If} ${Errors}
+    StrCpy $TmpVal "HKCU"
+  ${Else}
+    StrCpy $TmpVal "HKLM"
+  ${EndIf}
+
 !ifdef MOZ_MAINTENANCE_SERVICE
   Call IsUserAdmin
   Pop $R0