Unfortunately my problem doesn't appear to be with the client. I've installed multiple versions of MSM with no luck. I can also see that my hosts don't show the "Storage" disk health under their health status section either. Oddly, they are discoverable by any MSM version, I just can't login.
When I attempt to login, I see SYN packets going to the hosts on 3071. The process lasts for 12 hours with no change
I have the same issue on 6.5U2.
What is also strange is that I don't think anything is listening on port 3071 (or 5571). You can verify by dumping the connection list.
esxcli network ip connection list