Run below command to Windows System before adding to vRO
In CMD:
winrm quickconfig
winrm set winrm/config/service/auth @{Basic=”true”}
winrm set winrm/config/service @{AllowUnencrypted=”true”}
winrm set winrm/config/winrs @{MaxMemoryPerShellMB=”2048″}
In Powershell
Set-ExecutionPolicy unrestricted