So I currently work on my cities helpdesk as a support tech. I was deploying a PC today and needed to create an account that did not require a password so I had to remove it from the domain because of GP. While doing so I unintentionally entered my domain username and local built-in administrator account password and it successfully removed the PC from the domain. Is this something that Windows intends to allow? I was baffled that it worked because simultaneously upon hitting enter I expected the error to occur but it successfully rejoined the WORKGROUP I entered. I thought maybe I had made a mistake so I asked a coworker to do the same thing on another PC right next to me and it too succeeded. Any thoughts or explanations?