I have a Windows 2012 Rapid Recovery server version 6.1.3.100 with about 25 protected servers running well. I am not able to protect a MS SQL cluster, it keeps hanging on "Attempting to connect to <server>" until it times out after 5 minutes.
I have verified that the agent is running and I am able to telnet to port 8006 from the RR server so there seems to be no network issue. When I stop the agent service during the "Attempting to connect" it immediately comes back with a response that the agent is not running, so that's another proof that the agent is available.
Any ideas how to troubleshoot this issue?