Error:

Office Document Cache has stopped working.

Faulting application name: MsoSync.exe, version: 15.0.4481.1000, time stamp: 0x50ee661e

Solution:

Tried to reinstall, delete the cache files, does not work.

Then logged in with local admin, does not have this issue, guessing the appdata file issue, then log in with admin, and renamed the appdata folder to appdata_old in user’s folder.

Log back in with the user, and it works now.