Hyper-V can’t connect to a machine

I’m normally using remote desktop to access my Hyper-V server. Btw, I also use remote desktop to access virtual machines hosted on Hyper-V. So, today I was trying to connect to a virtual machine from Server Manager, and nothing happened. Google search? No luck. It took me a while to figure out that machine (console) has already been connected from another remote desktop Server Manager session. Strange dependency, terrible feedback. As expected.