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.
I am somewhat confused now. The version number you show indicates that the last update received by Office was in May. The version number for June would be 15.0.4623.1003. So why has yours shutdown? If the June updates have not been applied yet it should
still be ok. Just curious, that is all. Unless the damage got done while the update was being applied and it never got through the whole thing and did not get recorded. Oh well, I was just wondering.