How do I add Microsoft 365 to my Microsoft Authenticator app

For a Microsoft 365 work or school account, the QR code is usually shown from the Security info setup page for the account.

Use this path:

1. Go to https://mysignins.microsoft.com/security-info and sign in with the Microsoft 365 work or school account.
2. Select Add sign-in method.
3. Choose Microsoft Authenticator and select Add.
4. If Authenticator is already installed on the phone, select Next. The QR code appears on the screen.
5. In the Microsoft Authenticator app, select the plus (+) icon.
6. Select Work or school account.
7. Tap Scan a QR Code and scan the code shown on the computer.

If the Security info page does not appear, go to Additional security verification, select the checkbox next to Authenticator app, and then select Configure to display the QR code.

If the camera cannot scan the code, select Can't scan the QR image or I can't scan the bar code on the computer, then use Enter code manually in the app.

If the account is a personal Microsoft account instead of a work or school Microsoft 365 account, the QR code is shown from the Microsoft account Security page:

1. Go to https://account.microsoft.com/security.
2. Select Manage how I sign in.
3. Select Add a new way to sign in or verify.
4. Choose Use an app.
5. If Authenticator is already installed, select Set up a different Authenticator app and then Next to reveal the QR code.

References:

• How to add your accounts to Microsoft Authenticator
• Set up Security info from a sign-in page
• Set up multi-factor authentication for Microsoft 365