An error occurred accessing the Remote Procecedure Call service on the target computer.
The most common cause is something blocking access to the RPC service such as a firewall or other network error. There could also be a problem with the RPC service itself on the target computer.
Ensure that File and Printer sharing is enabled on the target computer and that the Remote Administration exception is enabled in the firewall. Also ensure that the Remote Procedure Call (RPC) service is running and that there are no errors in the target computer's event log related to RPC.