DPM 2010 Data Protection Manager Error ID: 316
or DPMRA Event id 85
Solution:
On the protected server running the DPM agent
SetDpmServer.exe -dpmServerName YOURDPMSERVER -isNonDomainServer –updatePassword
On the DPM server
Update-NonDomainServerInfo –PSName YOURPROTECTEDDPMSERVER –dpmServerName YOURDPMSERVER