Hi We have a server 2008 which is the SVC host is using 100% I have looked in ProcEXP inside the SVChost process and the thread rpcrt4.dll!rpcBindingUnbind+0X500 seems to be the one taking up all the memory any idea what it is doing?

rpcrt4.dll is the Remote Procedure Call (RPC) API, used by Windows applications for network and Internet communication. RpcBindingUnbind function:http://msdn.microsoft.com/en-us/library/windows/desktop/aa375613(v=vs.85).aspx. If its a 2008 you could install WSRM to manage CPU and memory :http://technet.microsoft.com/en-us/library/cc732553.aspx. MCTS - Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. http://mariusene.wordpress.com/

Hi Stephen, You've drilled down a bit too much in this instance, as that's a function call. If you're going to start killing things, you're better off killing a process rather than a function within a process. To answer your question though, it's trying to end an RPC call. Depending on what the process is, it would be safer restarting the service - if it is indeed a service to begin with. Cheers, Lain

killing the process did fix the problem