Process %1 (PID=%2). An remote procedure call (RPC) request to the Microsoft Exchange Active Directory Topology service failed ...

Process %1 (PID=%2). An remote procedure call (RPC) request to the Microsoft Exchange Active Directory Topology service failed with error %3 (%4). Make sure that the Remote Procedure Call (RPC) service is running. In addition, make sure that the network ports that are used by RPC are not blocked by a firewall.