2018-11 Update for Windows Server 2016 for x64-based Systems (KB4465659)
2018-11 Cumulative Update for Windows Server 2016 for x64-based Systems (KB4467684)
2018-11 Cumulative Update for Windows Server 2016 for x64-based Systems (KB4467691)
Update for Windows 8.1 for x64-based Systems (KB4468323)
Microsoft .NET Framework 4.7.2
Update for Windows 8.1 for x64-based Systems (KB4468323)
The machines have been rebooted before the patches have been applied (and after, then repeated). We have scanned the file system as requested within the help page. One of the machines failing is a standard build of Windows Server 2018 with nothing installed and all the previous patches applied using Windows Update. But the error seems to be returned for a number of OS including :-