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.
That version number means that the May 2014 Office updates are the last ones that were installed. Here is the link to the page showing what that Update for Office consisted of: http://support.microsoft.com/kb/2964042/en-us .