I have a few Windows Server 2016 machines running. All of them are configured for automatic Windows updates, which worked fine so far. We regularly monitor whether they are "up to date", so there are no old updates missing.
Tonight (2022-09-08), two of these machines filled up their System drive continuously trying (and failing) to install very old cumulative updates.
On one of them:
Update history
2020-03 Cumulative Update for Windows Server 2016 for x64-based Systems (KB4541329)
Failed to install on 08.09.2022[repeats 20-30 times]
2019-09 Cumulative Update for Windows Server 2016 for x64-based Systems (KB4516061)
Failed to install on 08.09.2022[repeats 8 times]
2019-08 Cumulative Update for Windows Server 2016 for x64-based Systems (KB4512495)
Failed to install on 08.09.2022[repeats 3 times]
2019-10 Cumulative Update for Windows Server 2016 for x64-based Systems (KB4519979)
Failed to install on 08.09.2022[repeats a lot, same for the 2020-04 and 2020-01 CUs]
It's the same problem, but with completely different CUs (2018-03 and 2018-04), on the other server.
The two servers are unrelated, at different physical locations (one an on-premise VM, the other one an Azure VM) and in different environments (one is domain-joined, the other one isn't), which makes me suspect a problem on Microsoft's Windows Update servers.
Is this a known issue? If yes, what's the recommended course of action to free up resources (TiWorker.exe is still consuming lots of CPU and RAM) and System drive space again?
NB: "Update status" just shows "Your device is up to date. Last checked: Yesterday, 22:10" (which is strange, since the CUs were installed today).
