Active Directory, How to tell if your computer is joined to an Active Directory

This page helps you tell whether your computer is connected or "joined" to the UOFI Active Directory.

Use the following steps to determine whether your computer is joined to an Active Directory domain, and, if so, whether you are logged in to the domain or to the local computer.

Windows 10


 In current builds (maybe starting in 20xx) you need to go into advanced system settings and choose the Computer Name tab to see this info.

Checking whether your computer is joined to Active Directory:

If you have a Domain: entry that is not ad.uillinois.edu, you may be part of a departmental Active directory. If you have an entry that starts with Workgroup: then your device is not joined to an Active Directory.

Checking whether you're logged in to the AD or the local machine:

Even if your computer is joined to the Active Directory, you may be logged in either to the Active Directory or to your local machine. To check:

  1. Open the Start menu, then type cmd in the Search box and press Enter.
  2. In the command line window that appears, type set user and press Enter.
  3. Look at the USERDOMAIN: entry. If the user domain contains your computer's name, you're logged in to the computer. If it contains the Active Directory's name, you're logged in to the Active Directory.

Mac OS X

Most Macs on campus are not joined to the campus Active Directory. However, some may be.

Checking whether your computer is joined to Active Directory:

If you have an Active Directory Domain entry that is not ad.uillinois.edu, you may be part of a departmental Active directory.