How to Join a Windows 10/11 Device to Azure AD

If you’ve had your device for a while and it’s already been set up, you can follow these steps to join your device to the network.

  1. Open Settings, and then select Accounts.
  2. Select Access work or school, and then select Connect.

    Access work or school and Connect links
  3. On the Set up a work or school account screen, select Join this device to Azure Active Directory.

      Set up a work or school account screen
  4. On the Let’s get you signed in screen, type your email address (for example, [email protected]), and then select Next.

    Let's get you signed in screen
  5. On the Enter password screen, type your password, and then select Sign in.

    Enter password screen
  6. On your mobile device, approve your device so it can access your account.

    Mobile notification screen
  7. On the Make sure this is your organization screen, review the information to make sure it’s right, and then select Join.

    Make sure This is your organization verification screen
  8. On the You’re all set screen, click Done.

    You're all set screen 

To make sure you’re joined

You can make sure that you’re joined by looking at your settings.

  1. Open Settings, and then select Accounts.

    Accounts on the Settings screen
  2. Select Access work or school, and make sure you see text that says something like, Connected to <your_organization> Azure AD.

    Access work or school screen with connected contoso account

Ref: https://support.microsoft.com/en-us/account-billing/join-your-work-device-to-your-work-or-school-network-ef4d6adb-5095-4e51-829e-5457430f3973