Note: Using a laptop or tablet to set up Multifactor Authentication is strongly recomended, as using a cell phone may result in problems for intial setup.
Step 1: Sign into Microsoft 365 or type (aka.ms/mfasetup) in your web browser and sign-in with your WORK OR SCHOOL ACCOUNT with your password like you normally do. After you choose SIGN IN, you'll be prompted for MORE INFORMATION.
Step 2: The default authentication method is to use the FREE MICROSOFT AUTHENTICATOR APP. If you have it installed on your mobile device, select NEXT and follow the prompts to add your account. If you don't have it installed, you will need to download it from your app store.
If you would rather use SMS MESSAGES sent to your phone instead, select I WANT TO USE A DIFFERENT METHOD Microsoft 365 will ask for your mobile number, then send you an SMS message containing a code to verify your device.
Step 3: Once you complete the instructions to specify your additional verification method, the next time you sign into Microsoft 365, you'll be prompted to provide the additional verification information or action, such as typing the verification code provided by your authenticator app or sent to you by text message.