Do the following to troubleshoot this issue: 1) If another DPM server is currently protecting %ServerName; use that DPM server ...

Do the following to troubleshoot this issue:  1) If another DPM server is currently protecting %ServerName; use that DPM server to uninstall the protection agent from %ServerName;. Then, use this DPM server to install the protection agent on %ServerName;. 2) Verify that the time on the DPM server and the selected computer is synchronized with the domain controller. At a command prompt, type "net time /set" to synchronize the time with the domain controller. 3) If the computer is a domain controller, verify that the primary domain controller (the PDC Emulator) is running Windows Server 2003 with Service Pack 1 (SP1), and that Active Directory has completed replication between the domain controllers since the Windows Server 2003 SP1 installation.