New
#11
OK, your host is not using the virtual switch, instead connecting to the network directly using the host NIC, therefore your virtual machines have no chance to connect, they simply do not find connection.
You told you have issues with the Virtual Switch Manager meaning we cannot use it to remove and recreate your switches, PowerShell has a bug in Build 10130 which makes it impossible to change the PS script execution policy so that's ruled out.
I am testing something on a test machine, I do not want to tell you a theory before I have tested it first. Might take an hour or so.