Reading Time: < 1 minute Once you arrive to Windows 2008 with Advanced Firewall and you run DCDiag you could end up with "error 0x6ba The RPC server is unavailable." This is the result of the remote DC not allowing RPC connections from the firewall being enabled. To remove this error and allow DCDiag to be run remotely, open up … Continue reading "Windows DCDiag Generating – Error 0x6ba "The RPC server is unavailable.""