Here's a possible fix for Vista SP1 installation failure

Discussion in 'Windows Vista General Discussion' started by Victek, Apr 5, 2008.

  1. Victek

    Victek Guest

    Here's a tip that solved my Vista SP1 installation failure problem. The

    When attempting to install SP1 from Windows Update (or the standalone
    installer) the process goes to the end of stage 3 and then says the
    installation was not successful, Windows is reverting changes, etc. The
    error number is 8004401E, but it's no help. Turns out the real cause was a
    couple of missing files:


    These files need to be in C:\Windows\system32\wbem\

    In my case the files were on my computer, but in the wrong directory. If
    the files are not on the computer they can be downloaded from here:

    This link was posted by a user in a Microsoft Technet forum (I don't know if
    there's an official link on the Microsoft support site for these).

    Here are the threads that made me aware of the fix:
    Victek, Apr 5, 2008
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