jeg kan ikke få rpc op at køre med http protokol

Jeg får følgende fejl.

C:\Documents and Settings\Administrator>rpcping -t ncacn

Exception 1722 (0x000006BA)
Number of records is: 3
ProcessID is 428
System Time is: 6/13/2006 13:22:24:466
Generating component is 14
Status is 1728
Detection location is 1398
Flags is 0
NumberOfParameters is 2
Long val: 1
Long val: 1728
ProcessID is 428
System Time is: 6/13/2006 13:22:24:466
Generating component is 13
Status is 1728
Detection location is 1428
Flags is 0
NumberOfParameters is 1
Long val: 400
ProcessID is 428
System Time is: 6/13/2006 13:22:24:466
Generating component is 13
Status is 400
Detection location is 1419
Flags is 0
NumberOfParameters is 1
Unicode string: Bad Request

C:\Documents and Settings\Administrator>