Hi,
There are times that this error occurs when some files in the Windows Update are missing or corrupted. Since you've already tried using the Windows Update Troubleshooter,try to run the Deployment Image Servicing and Management (DISM) and the System File Checker tool that will scan for any corruptions in Windows system files and restore corrupted files.
To do this:
- Open an elevated command prompt. To do this, right click the Windows button, and then select **Command Prompt (Admin).**If you are prompted for an administrator password or for a confirmation, type the password, or click Allow or Yes.
- Type the following command, and then press Enter.
DISM.exe /Online /Cleanup-image /Restorehealth
**Note:**It might take several minutes for the command operation to be completed.
3.Type the following command and press Enter.
sfc /scannow
NoteIt might take several minutes for the command operation to be completed.
4.Close the command prompt, and then run Windows Updateagain.
If the issue persists, we suggest performing an In-Place Upgrade to clean up your system. To do this, here's an article created by PaulSey.... It's a step-by-step guide to ensure that this procedure is properly done for us to rectify your issue.
You can also check this videothat we uploaded in YouTube for a visual step-by-step guide on how to do an In-Place upgrade.
Should you have any other concerns, don’t hesitate to let us know.