Hello,
The error messages suggest a possible corruption or conflict in Windows Server’s update files or registry. You have already done most of the common troubleshooting steps. However, you can try the following additional steps:
Reset Windows Update Components: Use the Windows Update Troubleshooter to automatically reset Windows Update components.
Manually Reset Windows Update Components: If the automatic method didn’t work, you can try manually resetting the components. You can find a detailed guide from Microsoft website below:
https://learn.microsoft.com/en-us/troubleshoot/windows-client/deployment/additional-resources-for-windows-update
In-place Upgrade: An in-place upgrade will reinstall the Windows Server without affecting your files and applications. This method can fix most system errors, including the update issues. Please back up your data before proceeding.
How to perform an In-place Upgrade with Windows 10 Step-by-Step Guide - Microsoft Community
Clean Boot: Perform a clean boot to eliminate software conflicts. Sometimes, third-party software can interfere with Windows Update.
https://support.microsoft.com/en-us/topic/how-to-perform-a-clean-boot-in-windows-da2f9573-6eec-00ad-2f8a-a97a1807f3dd
Best Regards,
Hania Lian
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