If Windows Firewall is enabled, remove DPM related entries from the exceptions list. In Control Panel, click Windows Firewall, ...

If Windows Firewall is enabled, remove DPM related entries from the exceptions list. In Control Panel, click Windows Firewall, click the Exceptions tab, and then delete Microsoft System Center 2012 R2 Data Protection Manager, Microsoft System Center 2012 R2 Data Protection Manager Replication Agent, DPMAM_WCF_SERVICE, DPMAM_WCF_PORT and CPWrapperServiceForDPMException from the list of exceptions.