To troubleshoot this error: 1) Verify that %ServerName; is remotely accessible from the DPM server. 2) If a firewall is enabled ...

To troubleshoot this error: 
1) Verify that  %ServerName; is remotely accessible from the DPM server.
2) If a firewall is enabled on %ServerName;, verify that it is not blocking requests from the DPM server.
3) Restart the DPM Protection Agent (DPMRA) service on %ServerName;. If the service fails to start, reinstall the protection agent.