The RPC server is unavailable

Hi,
I am trying to connect to a server remotely via an HP tool called Operations Orchestration and getting the following error:

exception=System.Runtime.InteropServices.COMException (0x800706BA): The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)

But when I use remote desktop connection application, I am successful to connect to the server.

Please help me about the error. What does it mean exactly? I have tried some solutions as a result from google search but they didnt help.

Thanx in advance

Hatice
galiptAsked:
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pdantroConnect With a Mentor Commented:
From what I have been able to find with the RPC service unavailable, you need to go into the firewall and set an out/in rule for WMI then that error should stop.
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DaeltCommented:
Maybe your program use another port than usual RDP (3389), if so, the firewall server side may be blocking it and reject your HP tool connection.
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