Though the site seems valid, the browser was unable to establish a connection.

"> The requested address specified a port (e.g. mozilla.org:80 for port 80 on mozilla.org) normally used for purposes other than Web browsing. The browser has cancelled the request for your protection and security.

"> The browser could not find the host server for the provided address.

">
  • Could the item have been renamed, removed, or relocated?
  • Is there a spelling, capitalisation, or other typographical error in the address?
  • Do you have sufficient access permissions to the requested item?
  • ">
  • It may have been removed, moved, or file permissions may be preventing access.
  • "> Additional information about this problem or error is currently unavailable.

    "> The provided address is not in a recognised format. Please check the location bar for mistakes and try again.

    "> The browser connected successfully, but the connection was interrupted while transferring information. Please try again.

    "> The requested document is not available in the browser's cache.

    "> The browser is operating in its offline mode and cannot connect to the requested item.

    "> The page you are trying to view cannot be shown because it uses an invalid or unsupported form of compression.

    ">
  • Please contact the web site owners to inform them of this problem.
  • "> The network link was interrupted while negotiating a connection. Please try again.

    "> The requested site did not respond to a connection request and the browser has stopped waiting for a reply.

    "> The address specifies a protocol (e.g. wxyz://) the browser does not recognise, so the browser cannot properly connect to the site.

    "> The browser is configured to use a proxy server, but the proxy refused a connection.

    "> The browser is configured to use a proxy server, but the proxy could not be found.

    "> The browser has stopped trying to retrieve the requested item. The site is redirecting the request in a way that will never complete.

    "> The site responded to the network request in an unexpected way and the browser cannot continue.

    "> The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.

    ">
  • This could be a problem with the server's configuration, or it could be someone trying to impersonate the server.
  • If you have connected to this server successfully in the past, the error may be temporary, and you can try again later.
  • "> You should not add an exception if you are using an internet connection that you do not trust completely or if you are not used to seeing a warning for this server.

    If you still wish to add an exception for this site, you can do so in your advanced encryption settings.

    "> The browser prevented this page from loading in this way because the page has a content security policy that disallows it.

    "> The browser prevented this page from loading in this context because the page has an X-Frame-Options policy that disallows it.

    "> The page you are trying to view cannot be shown because an error in the data transmission was detected.

    "> uses security technology that is outdated and vulnerable to attack. An attacker could easily reveal information which you thought to be safe. The web site administrator will need to fix the server first before you can visit the site.

    Error code: NS_ERROR_NET_INADEQUATE_SECURITY

    "> The page you are trying to view cannot be shown because an error in the network protocol was detected.

    ">