Hi, I just wonder whether the Services for RPC need to be started.
Setting for services can be found under Control Panel, Services.

>Dear,
>
> My NT 4.0 PDC server has the following problems, I wish anyone who knows the solution, please give me a hand. Thanks in advanced.
>
> Whenever I browse my PDC printer folder (wanna add printer), it will say "Unable to list printers on \\PDC, Error=1722. The RPC server is unavaible". Same problem when I use RPING to the PDC, which is the Exchange Server installed, it prompts "RPC call raised exception 0x6ba. The server is unavaible.".
>
> Finally, the RPC Service is running on my PDC and all others service are working correctly.