Open a web browser and navigate to https://office.com.

 

Sign in with your admin credentials.

 

Click the "admin" option.

 

Go to "Active users" under the "Users" section.

 

Select the appropriate user.

 

Click the "multi-factor authentication" option at the top of the page.

 

Navigate to and select the appropriate user.

 

Click the "Enable" option under "Quick steps"  

 

Click the "enable multi-factor auth" button in the dialogue box.

 

Click the "close" button in the dialogue box.

 

When the user attempts to log in, they will be prompted for more info. Click the "Next" button.

 

On the next screen select "Mobile App" and "Receive notification for verification."

 

A bar code should appear.

 

Have the user open the Microsoft Authenticator app on their phone and click the "+" button to add an account.

 

Select "Work or school account."

 

Click "Scan QR code."

 

Once the scan is complete the account will appear in the Microsoft authenticator app.

 

Back in the web browser, a message will be displayed indicating that the mobile app was set up. Click the "Next" button.

 

A test of the app setup will be conducted on this point. Go to the app and click "Approve."

 

Enter the user's mobile number.

 

Save the display app password and click "Done."