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willk7's avatar
willk7
Copper Contributor
Nov 20, 2021

Window 11 upgrade has failed error code 0x8007007f

Window 11 upgrade has failed error code 0x8007007f

  • Err0r404's avatar
    Err0r404
    Copper Contributor
    I actually ran into this issue as well when attempting to run the Windows 11 Installer Assistant, the problem was that the process would get to 71% and then error out with the Error Code specified in this thread.

    Similar to GreaterShrew issue, I ran everything on my device to ensure everything was updated regarding Windows Update, drivers and so forth. Ran the SFC actions and DISM commands, but did nothing to resolve the issue.

    One method that worked for me was running the installer program as an "Administrator", sounds dumb as our windows profile are set to administrators but right-clicking the program and selecting "Run As Administrator" did the trick for me.

    Otherwise, for anyone else that comes across this post at a later time, I would suggest the following as well:

    Run the following commands in an Elevated Command Prompt:

    SFC /scannow
    dism /online /cleanup-image /scanhealth
    dism /online /cleanup-image /restorhealth

    Ensure all Windows updates are installed for your current OS build. Settings > Updates

    Run the Windows11Assistant application as an Administrator

    Reboot as necessary


    Hope all this helps!!
    • mak56581's avatar
      mak56581
      Copper Contributor
      Hello, the info with the "Administrator" made it work for me. Thank you
      Only strange that MS not just tell me to do so!
    • treebluedogs's avatar
      treebluedogs
      Copper Contributor
      Tried all these tips and still error
      I need to know how to install 11 as administrator.
      I don't know how to do it.
      HELP
      • Dennis835's avatar
        Dennis835
        Copper Contributor

        I reinstalled windows 11 where I kept my files and that is what worked for me.......make sure you a backup and disk image before you try. I use macrium and it's back up works like a charm treebluedogs 

    • pcknights's avatar
      pcknights
      Copper Contributor

      Run as admin worked for me as well to pass the 71% Barrier. Thanks so much!!

      • rozeboosje's avatar
        rozeboosje
        Copper Contributor
        My "me too" for "Run as Administrator". Nice one.
  • SalmanAhmed's avatar
    SalmanAhmed
    Steel Contributor

    Hi willk7 

    1. Open cmd in elevated mode, right-click on Command Prompt icon, and select Run as administrator.

     

    2. Please execute the below commands step by step:

    sfc /scannow
    dism /online /cleanup-image /scanhealth
    dism /online /cleanup-image /restorehealth

    The first command will scan and fix system file corruption issues, second and third command will use DISM (Deployment Image Servicing and Management) tool to scan/restore the health of the windows installation image. 

     

    3. Reboot the computer and run Windows 11 Upgrade

     

    I hope these steps could be helpful for you, please do not hesitate to contact me for any further assistance.

  • Reza_Ameri's avatar
    Reza_Ameri
    Silver Contributor
    Have you ried running the PC Health Check app to verify if your system is ready for the upgrade?
    Are you installing from the Windows Update or using the Windows installer file?
  • Little_Joe's avatar
    Little_Joe
    Bronze Contributor

    willk7

    Hello,

    This is a known issue where you can bypass via install Win11 in Beta Channel then switching back to Dev Channel.

     

  • TerryDawson's avatar
    TerryDawson
    Copper Contributor
    Tried Salman's method and didnt work but thank you for the suggestion! Running as admin did it for me, However its strange, I didnt have to do this last time... All working thanks all
  • Ruben798's avatar
    Ruben798
    Copper Contributor

    Having the same problemwillk7 

    Cannot install Windows 11

    Tried as Admin, ran all scan commands 

    rebooted in clean mode safe error 0x8007007f.

     

     

    My Windows 10 HP machine says it meets all hardware requirements for Windows 11

     

    Please help

     

    thx

     

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