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Thread: Install error. "Windows Installer cannot update... protected files

  1. #1
    Join Date
    Jul 2004
    Posts
    17

    Install error. "Windows Installer cannot update... protected files

    I’m having a HP laptop running with XP SP3 and Office 2007 Home and Student. Due to some problem with my laptop I required to reformat it but my Office was working fine. I formatted the system, re-installed everything but now while installing Office 2007 again, installation fails with and error saying

    “Microsoft Office Home and Student 2007 encountered an error during setup. The Windows Installer service cannot update one or more protected Windows files.”

    The error occurs after entering the product and at the stage of about 20% of the progress bar. Can someone help me out with this ?

  2. #2
    Join Date
    Dec 2008
    Posts
    1
    office 2007 :The windows installer service cannot update one or more protected windows

    read through this post, i just did it and it worked for me and as you'll see, for many other people

  3. #3
    Join Date
    Jun 2010
    Posts
    1

    Re: Install error. "Windows Installer cannot update... protected files

    Thank your very much. This indeed helped a lot !

  4. #4
    Join Date
    Aug 2010
    Posts
    1

    Install error. "Windows Installer cannot update... protected files

    Its really a shame of microsoft.
    but thanks to u.
    The solution worked for me.

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