Creating Team Foundation Server 2012 Lab Management Standard Environments and getting error “Verify that the machines are accessible using the user name and password provided”

Details a specific troubleshooting step for setting up Team Foundation Server 2012 Lab Management standard environments, focusing on resolving the "Verify that the machines are accessible using the user name and password provided" error when using non-domain-joined machines. The solution involves disabling "Remote User Access Control" by modifying the `LocalAccountTokenFilterPolicy` registry entry to `1`.