Getting MSIZAP.EXE despite a stuck Windows Installer

Discussion in 'Windows Vista General Discussion' started by Xavier Nodet, Feb 27, 2007.

  1. Xavier Nodet

    Xavier Nodet Guest

    Hi all,

    I have a problem with Windows Installer, using Vista Ultimate... My PC
    crashed during an install, and now I can't use Windows Installer: I always
    get an error code 1500 'An install is already in progress'. So I can not
    install or remove *any* program that uses Windows Installer (e.g. the
    latest Service Pack for Visual Studio 2005, the VPN software I need to
    connect to the office, etc).

    I learnt about the MSIZAP.EXE utility
    (, and would like to
    give it a try. So I downloaded the Windows Installer CleanUp Utility
    (, but the problem is that I can't
    install it! If I could, I would not need it in the first place!

    How can I get this MSIZAP.EXE file? I need version 3.1.4000.2726 or

    Thanks for your help. This is driving me nuts...
    Xavier Nodet, Feb 27, 2007
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  2. Xavier Nodet

    Xavier Nodet Guest

    On Tue, 27 Feb 2007 17:38:25 +0100, Xavier Nodet wrote:

    [Windows Installer thinks an install is already going on]
    I tried to install Windows Installer CleanUp Utility onto another machine,
    and copy the MSIZAP.EXE file, but only to get an error:

    The system cannot find the file U:\bin\win32\msizap.exe.

    I checked that this program does only require DLLs that I have on my PC...
    What can I try next?

    Xavier Nodet, Feb 28, 2007
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