Fresh install of 2008 R2 Domain Controller. Unable to connect via RDP, receiving "RPC Server is unavailable" with RDP and when trying to force replication. I have checked my SRV records with both DNS servers, they appear normal. RPC service is running. Not blocked by firewall (service disabled) What could be causing this and how do I fix it?
When you say "Not blocked by firewall (service disabled)" I wonder what you mean, specifically.
If you stop the "Windows Firewall" service the machine will begin filtering incoming traffic very restrictively (see this TechNet blog post for details). If you really don't want the Windows Firewall to be enabled you should disable it using "supported" methods so that you don't fall victim to unwanted restrictive filtering.