Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Just for giggles I remote desktoped into the one in California with this issue. It shows Office 2013 Pro en-us version 15.0.4615.1002. Quick repair fails "Something went wrong" with error code 2147483634-8. Online repair never gets past step 1 of 4 and fails with error code 0-4.
They're on a super-slow connection so I can't do much at the moment. I might try to reconnect later and do the reinstall and let it run over the weekend (yes it's that slow so I don't want to impact the other users at that location) but maybe that info will help someone find an explanation/cause/fix.