Windows 8 and 8.1 Forums


Self-inflicted Windows 8 activation problem.

  1. #1


    Posts : 9
    Windows 8 Pro 64bit

    Self-inflicted Windows 8 activation problem.


    I upgraded four Win 7 machines to Windows 8 Pro recently. I then installed the Media Centre Pack on them but in doing so I stupidly managed to use one of the product keys twice. Now the PC with the incorrect key is reporting that Windows can't be activated.

    I tried running SLUI.EXE 3 and typing in the key but after being told that the key worked activation failed with error code 0xC004C4AA and unable to find a detailed error description.

    Can anyone advise me how can I activate that machine with the correct product key please?

      My System SpecsSystem Spec

  2. #2


    Hafnarfjörður IS
    Posts : 4,376
    Linux Centos 7, W8.1, W7, W2K3 Server W10


    Quote Originally Posted by keverne View Post
    I upgraded four Win 7 machines to Windows 8 Pro recently. I then installed the Media Centre Pack on them but in doing so I stupidly managed to use one of the product keys twice. Now the PC with the incorrect key is reporting that Windows can't be activated.

    I tried running SLUI.EXE 3 and typing in the key but after being told that the key worked activation failed with error code 0xC004C4AA and unable to find a detailed error description.

    Can anyone advise me how can I activate that machine with the correct product key please?
    Hi there
    did you change the product key correctly. It's easy to make a mistake.

    What I would also do is uninstall the media pack - re-activate windows and try again.

    If all else fails totally try activating by phone -- Ms are quite reasonable --just explain EXACTLY what you did and they should be able to activate Windows for you.

    Note -- this is why one should ALWAYS take backups BEFORE installing any software. Imaging the OS should not take more than 20 mins these days.

    Cheers
    jimbo
      My System SpecsSystem Spec

  3. #3


    Posts : 9
    Windows 8 Pro 64bit


    I've already tried to uninstall the media pack but all I could find in the list was Windows Media Encoder 9 Series which did not remove the Media Centre Pack.
      My System SpecsSystem Spec

  4. #4


    Posts : 9
    Windows 8 Pro 64bit


    To get Windows 8 activated I had to remove the Media Centre Pack as detailed here: https://www.eightforums.com/tutorials/16077-media-center-remove-go-back-windows-8-pro.html
    Thanks for your help.
      My System SpecsSystem Spec

Self-inflicted Windows 8 activation problem.
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