since updating to Windows 11 Pro, the offline updates seem to hang for about 30 seconds during install, but then resume and complete ok.
When did the hang problem happen? On which step?
From the log file you provided, the developer does not find info about "hang for about 30 seconds during install".
The offline update here means an offline full version or a 6.2MB fresh online installer?
About the online update failure issue, please provide the log files under C:\Users\xxx\Documents\DVDFab\DVDFab12\Temp\update\updateLog.