How to fix install " Windows 11 Insider Preview Feature Update (26220.9022)"

For build 26220.9022 in the Beta Channel, the desktop watermark is normal and this build is part of Windows 11, version 25H2.

For repeated install failures, use this order:

1. Try a clean boot, then run the update again. A clean boot can help if third-party apps or services are blocking the upgrade. This was the accepted resolution in a similar Insider update failure case.
2. Temporarily remove third-party antivirus or security software before retrying the update. Microsoft notes that third-party security software can cause update errors. Reinstall it after the device is updated.
3. Reset Windows Update components. Open Command Prompt as administrator and run these commands one at a time:

      net stop bits
      net stop wuauserv
      ren %systemroot%\softwaredistribution softwaredistribution.bak
      ren %systemroot%\system32\catroot2 catroot2.bak
      net start bits
      net start wuauserv
   

   Then restart the PC and try the update again.
4. Check and repair disk errors. Open Command Prompt as administrator and run:

      chkdsk /f C:
   

   Restart when prompted.
5. If the update still fails, use a repair install / reinstall now path. In a similar Windows Insider update failure case, the accepted answer was: Settings > System > Recovery > Reinstall now.
6. If needed, use the latest Insider ISO for the channel and run Setup.exe. In a similar Insider preview update case, the accepted guidance was to download the latest ISO for the Insider channel, mount it, and run Setup.exe. Back up files first before proceeding.

Notes:

• The command-line steps require administrator permissions.
• Renaming SoftwareDistribution and Catroot2 is a standard troubleshooting step, but it resets the local Windows Update cache.
• Uninstalling security software and reinstall/repair actions can affect apps or settings, so a backup is recommended first.

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