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Windows Installer problem on Windows 7

harvestharvest By birthright,a stupendous badass.Registered User regular
This is happening:


In this case, it's happening with Microsoft Security Essentials, which is kind of a big deal for me. It fails to install without error if I hit cancel on the prompt.

This also happens basically any time I try to install something through Steam, but in those cases usually hitting Cancel lets the rest of the install go through without issue, probably because I already have the necessary files in the SxS folder.

Searching for this problem is hard. There is a ton of irrelevant bullshit and the people having the same problem as I am having never report success in fixing it. Anyone know what I should do?

harvest on


  • Bendery It Like BeckhamBendery It Like Beckham Hopeless Registered User regular
    Open regedit and see if this key is chillin

    HKEY_LOCAL_MACHINE \Software\Microsoft\Windows\CurrentVersion\Installer\InProgress

    looks like your windows installer service is hung on an old task.

    Also check this one
    HKEY_LOCAL_MACHINE \System\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations (this one could also just be \FileRenameOperations\)

    it should have no entries.

    Other then that might just want to reregister your installer

    msiexec.exe /unregister

    msiexec.exe /register

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