I do this all the time, so why even bother doing it via GUI when you can PowerShell it.
Enable RDP using Powershell and ff you have the Windows Firewall enabled, you also need to allow RDP through Windows Firewall:
Set-ItemProperty ‘HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server’ -Name fDenyTSConnections -Value 0
Enable-NetFirewallRule -DisplayGroup “Remote Desktop”
Hopefully this will get your lab up and running quicker than ever!