How to fix error 0x800f0922 in Windows 11

2Method 2: Identify the corrupted task GUID in the registry

When to use: Use this method if removing staged packages alone does not solve the error and your logs show that the SecureBootEncodeUEFI task failed to register.

1. Right-click the Start menu icon on your taskbar and select Command Prompt (Admin) or Terminal (Admin).
2. Select Yes on the User Account Control prompt to open the elevated command window.
3. Type the following registry query command to find the specific identifier (GUID) associated with the corrupted task: reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Windows\PI\SecureBootEncodeUEFI" /v ID
4. Press Enter to execute the query.
5. Observe the console output text on your screen. You will see a line displaying ID REG_SZ followed by a unique GUID string inside curly braces, formatted like {<GUID>}.
6. Copy or carefully write down this exact GUID string, including the surrounding curly brackets, because you will need it to target the corrupted registry locations in the next step.

What to expect afterwards: Retrieving this unique identifier ensures you can precisely locate and delete only the corrupted task cache folders without disturbing any valid Windows system tasks.

3Method 3: Clean up corrupted Task Scheduler registry keys

Illustration: the Windows Update page in Windows 11 Settings

When to use: Use this method after obtaining the task GUID to delete the damaged registry keys that block Task Scheduler and cause update rollbacks.

Warning: Modifying system registry keys alters core Windows operational settings. Ensure you have accurately identified the GUID from Method 2 before executing these deletion commands.

1. Open an elevated Command Prompt window by searching for cmd in the Start menu, right-clicking Command Prompt, and selecting Run as administrator.
2. In the console window, type the command to delete the Maintenance task cache entry (replace {GUID} with the actual GUID string obtained in Method 2): reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Maintenance{GUID}" /f
3. Press Enter and verify that the screen shows The operation completed successfully.
4. Type the second command to delete the Plain task cache entry, substituting your GUID: reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Plain{GUID}" /f
5. Press Enter and check for the success confirmation on screen.
6. Type the third command to remove the main Tasks cache entry: reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks{GUID}" /f
7. Press Enter and confirm the operation completed successfully.
8. Finally, type the command to remove the task tree structure key: reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Windows\PI\SecureBootEncodeUEFI" /f
9. Press Enter, confirm all operations completed successfully, and restart your computer.

What to expect afterwards: Deleting these corrupted registry keys removes the broken task definition so Task Scheduler no longer triggers error 0x80070002, enabling Windows Update to finish installer queue tasks without rolling back.

If nothing worked

If error 0x800f0922 persists after deleting the staged update packages and clearing the corrupted task registry keys, run the Windows Update troubleshooter from your system settings to check for remaining service glitches. You can also inspect system files to verify that all installation components are healthy. Ensure your device maintains a stable internet connection and remains powered on while retrying the update process.