I mean our firewall blocks the connection to ESXi servers (192.168.100.2-7).
Client -- (allowed) ---> VMware Center (192.168.100.1)
Client -- (blocked) ---> ESXi servers (192.168.100.2 -7)
You can set your PC firewall to allow only the connection to VMware Center to replay my scenario.
I attach the screenshot when I use VMware Workstation 16.0.0. The version 15.5.1 works normally.