RPC Server Unavailable Error Message

You run Risetup.exe, or perform an administrative task on the RIS server by using the Active Directory Users and Computers snap-in or any administrative task that requires communication with Active Directory, and an error message appears that indicates that the RPC server is unavailable.

Possible Causes:

There is a problem with the Domain Name System (DNS) server.

Diagnostic Tests:

Run Netdiag to determine the DNS problem, and take appropriate steps to fix the DNS service.