If the host is in a non-trusted domain, remove the host (%ComputerName;) from VMM in the VMs and Hosts workspace of the VMM ...

If the host is in a non-trusted domain, remove the host (%ComputerName;) from VMM in the VMs and Hosts workspace of the VMM console. Then, use the Add Hosts Wizard to add the host and automatically install a new agent.

If the host is on a perimeter network, after you remove the host from VMM, you must manually uninstall the VMM agent from the host computer, install a new agent locally on the host, and then add the host to VMM.