New B200 M4 blades can running on Intel v4 processors. You may see discovery issue if your UCSM firmware version lower than 2.2.7c. I hit that problem few days ago when I install a new M4 blade. The FSM hung on 58% a real long time and failed eventually.
If you have VMware Workstation and VMware Remote Console both installed on Windows 10 you may see vCenter virtual machine console in vSphere Web Client is opened by VMware Workstation instead of VMware Remote Console . If you see same case your VMware Remote Console may be hijacked. I call it "hijack" since there is no easy way to revert it back.