ISA SERVER 2006 (RPC server not found)

I have a active directory based domain 2003 server and user are connected with this domain. DNS server working properly. I have a latest ISA 2006 server. I deploy my isa server 2006 server as a member server when i am trying to connect my AD domain user on ISA server but this procedure is failed and error is occure RPC server not found kindly help me

 

Are you running any other applications on the ISA server?

This search might lead you in the right direction.

http://www.google.com/search?q=ISA+2006+RPC+server+"not+found"+site:microsoft.com

 

Service Pack2

I have the smae problem.

I have ISA 06 runnng on MS Server 2003 with sp1 as well as Mailmarshal all fully logged onto my domain. No enterprise slution one AD/ Running Prim DNS fo resolutionof internal Domain. MY proxying (if you could call it "internet sharing) is working and Mail marshal is happy to run together.

I ran sp2 on my DMZ and all went well until i installed it on my ISA Box.
Now the mail marshal console is not available says snapin wazs created in a older version of MMC-- still no problem--- but ISA now under event viewer shows RPC server not located did not join my domain so not fully authenticated to resolve client requests anymore.

So now when a client triesto browse the internet they get a credentials request from the ISA box but when you put them in it doesnt and cant authenticate because the RPC server is not available.

If i unistall the SP2 for win 2003 then RPC becomes available BUT i cannot administer the ISA and Mail Marshal Consoles.......

Win half way each time.... Any ideas would help!