How to add a new user when your Windows computer is running Domain Controller
Have you ever tried to create a local account or new user and failed because your Windows computer is under Domain Controller? Here are some simple steps you can take to begin the process of preparation for mediation computer without having to access names and passwords.
Steps:
1: Enter the Control Panel.
Then to the administrative tools.
2: Click on Computer Management.
Now a new window will open.
3: From the left, select:
Local users and groups
Then click on Users.
Then right-click on the white space on the right.
4: We select New User.
Enter a username and password.
So you created a local user on a computer that uses a Domain Server.
Images: wikihow.com