2. Under Security info, you’ll notice already configured methods if prior setup was done. If you have already registered, you'll be prompted for two-factor verification. It is recommended that you use at least two forms of MFA methods to keep one as a backup in case you are having technical issues with the other. The order should be to use your Cellphone as a backup method and the Microsoft Authenticator App as primary for ease of use. To add a method select Add sign-in method > Select the method preferred > Follow the prompts to finish the setup completion. In a cases where you change your phone number and or cellphone device these methods will break and prevent you from signing into your Office account. In this case you will want to Delete any non-functional MFA methods and follow the Add sign-in method instructions to update your personal MFA methods.
   
    
3. Primary recommended MFA method > Add Sign-In Method select Authenticator app from the list, and then select Add.
4. If you don't already have the Microsoft Authenticator app Installed on your cellphone, on the Start by getting the app page, select Download now to download and install the Microsoft Authenticator app on your mobile device, and then select Next. For more information about how to download and install the app, see Download and install the Microsoft Authenticator app.
   • If your organization lets you choose a different method besides the authenticator app, you can select I want to set up a different method. (This will allow to add a cellphone number instead of setting up the Authenticator App option)
      
5. Remain on the Set up your account page while you set up the Microsoft Authenticator app on your mobile device.
   
    
6. Open the Microsoft Authenticator app on your phone, select to allow notifications (if prompted), select Add account from the Customize and control icon on the upper-right, and then select Work or school account.

Note: The first time you set up the Microsoft Authenticator app, you might receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). You must select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step. If you don't allow the camera, you can still set up the authenticator app, but you'll need to add the code information manually. For information about how to add the code manually, see Manually add an account to the app.

7. Return to the Set up your account page on your computer, and then select Next. The Scan the QR code page appears.
   
    
8. Scan the provided code with the Microsoft Authenticator app QR code reader, which appeared on your mobile device after you created your work or school account in Step 6.
9. The authenticator app should successfully add your work or school account without requiring any additional information from you. However, if the QR code reader can't read the code, you can select Can't scan the QR code and manually enter the code and URL into the Microsoft Authenticator app. For more information about manually adding a code, see Manually add an account to the app.

11. Approve the notification in the Microsoft Authenticator app, and then select Next. Your security info is updated to use the Microsoft Authenticator app by default to verify your identity when using two-step verification or password reset.