Window Update Error

If you're encountering an error related to Windows Update and the Task Scheduler, it may be due to corrupted tasks or issues with the Task Scheduler service. Here are some steps you can take to troubleshoot the issue:

1. Check for Corrupted Tasks: Open Task Scheduler and see if any tasks are producing error messages. If you find any tasks that state they no longer exist, take note of them.
2. Delete Corrupted Tasks: If you identify corrupted tasks, you can delete them from the Task Scheduler. You may also need to remove their corresponding registry entries from the following location:
   • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks
3. Repair Missing or Corrupted Files: If the Task Scheduler service is not starting, it could be due to missing files. You can use the System File Checker tool to repair any missing or corrupted system files. Run the command sfc /scannow in an elevated Command Prompt.
4. Restart the Task Scheduler Service: After making changes, ensure to restart the Task Scheduler service. You can do this by running net start schedule in an elevated Command Prompt.

If these steps do not resolve the issue, you may want to contact Microsoft Support for further assistance.

References:

• Scheduled tasks fail with error "Task schedular service is not available"
• Troubleshoot issues with the Task Scheduler service not starting
• Windows Update common errors and mitigation

The December update (KB5072033) is reported by many people as very hard to install and results in that error, try using the offline installer from the Microsoft Catalog on the link below to install that update,

Please check carefully, there are 5 versions of the update installer, only install the version that applies to your version of Windows 11 (24H2 or 25H2).

https://www.catalog.update.microsoft.com/Search.aspx?q=KB5072033