Out of the 500+ clients I have backed up for my company, one refuses to cooperate. After activation and trying to run a backup I receive a Backup Terminated message as soon as the backup is initiated (as pictured below).

This is on a windows 7 x32 machine. On the Avamar side there is a generic error 10007 with no data in the session log. The configuration for the backup is working on hundreds of other similar machines. Any help where to look for a cause on this would be very much appreciated! I have already attempted to completely reinstall the client on the users machine, rebooted, tried on another profile, used a different network connection.