why do i get "this computer is not running genuine windows" 0x8004fe21 on my pc with windows 7 home premium RRS feed

  • Question

  • I have an HP desktop, HPE-210f, that I purchased in August, 2010.  It came with Windows 7 Home Premium already installed on it.  Several days ago I started getting the error window "This computer is not running genuine Windows", error code 0x8004fe21.  Why am I getting this and how do I resolve the issue?
    Wednesday, December 17, 2014 7:45 PM


  • The most common cause currently for this error is having installed a botched MS update - please first attempt using Windows Update to install the corrective patch.

    Go to Windows Update, and run a Check for Updates.

    KB 3024777 should be shown - download and install it - it will uninstall the problem update.

    Once complete, reboot TWICE, and tehn post an MGADiag report.

    To properly analyse and solve problems with Activation and Validation, we need to see a full copy of the report produced by the MGADiag tool

    (download and save to desktop - http://go.microsoft.com/fwlink/?linkid=52012 )

     Once saved, run the tool.

    Click on the Continue button, which will produce the report.

     To copy the report to your response, click on the Copy button in the tool (ignore any error messages at this point), and then paste (using either r-click/Paste, or Ctrl+V ) into your response.

      - in your own thread, please

    Please also state the Version and Edition of Windows quoted on your COA sticker (if you have one) on the case of your machine (or inside the battery compartment), but do NOT quote the Key on the sticker!


    Noel Paton | Nil Carborundum Illegitemi
    CrashFixPC | The Three-toed Sloth
    No - I do not work for Microsoft, or any of its contractors.

    Wednesday, December 17, 2014 8:49 PM