WMI Error (RPC Server is Unavailable)

WMI Error (RPC Server is Unavailable)

I'm getting the dreaded "RPC Server Unavailable" error when using WMI credentials on a new server. I've been through all of the troubleshooting / KB articles and everything seems OK (services are running, server is pingable on IP and name, no firewalls are running etc) but I still get the error and can't get the server added.

Can you help?

Thanks,
David
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