We have an install of Windows Server 2012 Essentials which was an upgrade for a SBS Server 2011 Domain. The upgrade went without any problem and we have since removed the SBS server from the domain.
Now we have a problem that has occurred twice so far. For no reason and at no apparent time or without any entries in the event log on the Windows Server 2012 Essentials server all of the client computers show as removed from the dashboard and then
when you try to log onto the client computers they are no longer part of the domain and need to be rejoined.
The only computer that has not been removed is one that is not configured for backups, all of the other computers have a last backup date of the 12th but have shown no errors in the dashboard over this period.