RPC Error from SpfGetNextProtectedFile

[ghamilto]

I'm working on an app that has to support Windows 2000. I intermitently get error 0x800706ba ("The RPC server is unavailable.") on calls to SpfGetNextProtectedFile. I haven't been able to determine any pattern to the failures. I've tested the app on several servers. All have occasional failures, but none fail consistently. This is a particularly confusing error given that the "RpcHandle" parameter has to be NULL.

Has anyone seen this error before or have any idea what might cause it?

Thanks,
Gregg