Do the following to troubleshoot this issue: 1) Verify that %ServerName; is remotely accessible from the DPM server. 2) If ...

Do the following to troubleshoot this issue: 
1) Verify that %ServerName; is remotely accessible from the DPM server.
2) If a firewall is enabled on %ServerName;, make sure that it is not blocking requests from the DPM server and has an exception for Windows Management Instrumentation(WMI).
3) Try installing the agent manually by selecting "Attach Agents" in the agent installation wizard.

To troubleshoot this problem, refer to http://go.microsoft.com/fwlink/?LinkId=157614