We had this strange machine that always been deleted on ePO during AD Sync (machine on AD is not moved) which results to users cannot authenticate on PBA. Looking at the machine on ePO and it becomes "Unmanaged". The issue can be resolved by doing machine recovery and sync the McAfee agent to ePO server.
The problem becomes redundant and will be a non-productive way if doing the recovery procedure all the time when the AD Sync tasks run and the user complain on his login.
If anyone has encountered the same and applied a permanent fix, would really appreciate.
Thanks in advance