Installer encountered an error 0x800f0905 while uninstalling KB5039211

Encountered an error 0x800f0905 while uninstalling Windows update KB5039211. Here are some options to resolving this issue:

  1. Run the System File Checker (SFC) and DISM tools:Open an elevated Command Prompt and run:text
    sfc /scannow
    DISM /Online /Cleanup-Image /RestoreHealth
    Restart your computer after these complete.
  2. Clear the Windows Update cache:
    • Stop the Windows Update service
    • Delete everything under C:\Windows\SoftwareDistribution\Download
    • Restart the Windows Update service
  3. Check the registry:Look for and delete (if found) the following registry key:textHKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\Packages\Package_for_RollupFix~31bf3856ad364e35~amd64~~[version number] (Be very careful when editing the registry)
  4. Ensure you have enough free space on your system drive, especially in the recovery partition. Some users reported needing to expand their recovery partition to resolve similar issues.
  5. If the above steps don’t work, you may need to try more advanced troubleshooting:
    • Use the Windows Update Troubleshooter
    • Perform a clean boot and try the uninstallation again
    • Consider using the Windows Update Standalone Installer (wusa.exe) to uninstall the update

If you continue to have issues consider rolling back to a system restore point from before the problematic update was installed.

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