OK, on this computer there were more problems to fix.
Several restrictions, malware removal, system file repair, and 2.3 GB temporary data deleted.
Do a scan again with the tool AdwCleanerand post the report link
Otherwise present on your PC, the old version 20H2 19042.1586 (from 2009),
Windows Update will not offer anything, security updates and bug fixes are no longer supported par Microsoft.
In the meantime there have been several versions, and the latest update is the version 21H2 from Windows 10 November 2021.
Without conviction that it still works with this version, we can try with Microsoft’s update assistance.
On this page click on Update now
Then on the downloaded file click right on Windows10Upgrade9252 and on Execute as administrator
If everything is ok the utility will install the latest system update 10.
–
–