Windows NT Users are the users and user groups on your Windows network who have been granted permission to use specific Timbuktu Pro services on your computer. The Windows NT Users you create are similar to Registered Users, but—because they have already been authenticated by logging in to a secure Windows network—they do not need to use an additional password to access your computer.
If desired, you can require Windows NT Users to ask for permission after they have been authenticated but before they can connect to your computer.
See Creating Windows NT Users.
Note: Privileges granted to Guest Users are automatically granted to Registered Users and Windows NT Users. You cannot withhold a privilege from a Registered User and Windows NT User if that privilege is granted to guests.