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dixonsimon's avatar
dixonsimon
Copper Contributor
Feb 22, 2026

Unable to install the Windows Preview Update

I am unable to install the Windows Insider Preview update for the beta channel and I do not know how to fix it. I have retried around 5 or 6 times and still same error persists,

It shows the following error.

 

Windows 11 Insider Preview Quality Update (26220.7872)

Install error - 0x80070306

Please help me fix this issue,

Thank you.

9 Replies

  • Boydsy's avatar
    Boydsy
    Copper Contributor

    The Microsoft Windows update killed my wife's Dell laptop. She can't even get it started so she can't run the troubleshooting. Now what do we do?

      • Boydsy's avatar
        Boydsy
        Copper Contributor

        I thought that too. But I can't get past the Bitlocker Key screen, no matter what.

  • Xanaidu's avatar
    Xanaidu
    Copper Contributor

    I got the same issue with this update but different error. The quality of updates has significantly reduced.

  • DELAVAULT2's avatar
    DELAVAULT2
    Copper Contributor

    Bonjour, moi le miens télécharge correctement mais lors du redemarrage il met un temps considérable à installer +de 2 heures

  • Hello,

     

    The error code indicates corruption of Windows Update components. Please try this fix

     

    Open administrative Command Prompt and type following commands one-by-one followed by Enter key.

     

    net stop wuauserv

    net stop cryptSvc

    net stop bits

    net stop msiserver

    Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

    Ren C:\Windows\System32\catroot2 Catroot2.old

    net start wuauserv

    net start cryptSvc

    net start bits

    net start msiserver

     

    Close Command Prompt and see if it resolves the issue.

     

    If issue still persists, try this:

     

    1. Search for 'windows powershell' using Windows Search.

     

    1. From results, choose Windows PowerShell and select Run as administrator.

     

    1. Then type/paste following and press Enter key:

     

    Repair-WindowsImage -Online -RestoreHealth

     

    1. Let the command complete, restart your system then.

     

    Let us know if this helps!

    • HanburuSiPairotto77's avatar
      HanburuSiPairotto77
      Copper Contributor

      I have the same issue;

      net stop wuauserv

      net stop cryptSvc

      net stop bits

      net stop msiserver

      Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

      Ren C:\Windows\System32\catroot2 Catroot2.old

      net start wuauserv

      net start cryptSvc

      net start bits

      net start msiserver

      Doesn't help, because you can not rename Catroot2, it is locked by other processes, I even tried Safe Mode. Yes, I stopped all services here. Catroot2 still can't be renamed! 

  • gb636460's avatar
    gb636460
    Copper Contributor

    I understand your frustration,  the issue may be your system is not 100% compatable.   I have the same issues with my Dell AIO desktop.   The system originally was released with Win 7, and have added more disk space and memory,  that helped with getting it to Windows 11, but the newer Windows 11 updates not installing due to hardware requirements.   Review system requirements and verify your system is compatable. 

    • dixonsimon's avatar
      dixonsimon
      Copper Contributor

      My PC is the latest Lenovo Slimpad laptop and it is still showing the same error, This needs to be fixed asap.