Sounds like your system isn't actually reporting back to WSUS
https://www.ajtek.ca/wsus/client-machines-not-reporting-to-wsus-properly/
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I have a WSUS server with the 100% updated report of a certain station, however, on the station, when accessing windows update, the last update is with the date of February... Wasn't it supposed to show the most recent carried out by wsus? How do I solve it?
Sounds like your system isn't actually reporting back to WSUS
https://www.ajtek.ca/wsus/client-machines-not-reporting-to-wsus-properly/
I managed to run the script but I still don't see the updates sent by WSUS, remembering that the WSUS console is up to date.