DPM 2010 Data Protection Manager Error ID 316 on DPM Server or DPMRA Event id 85 on Workgroup Client

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