Microsoft 365: Setting up Two Factor Authentication (iPhone)  Step 1   Navigate to your phones App Store and search for  Microsoft Authenticator app . The search results should have found the Authenticator app, Click Download.   The “Authenticator” app should now appear on your home screen. You will need this for step 3.    Step 2  1. Using your computer, open a browser and navigate to   https://login.microsoftonline.com .       2. Log into Office 365 online with your company email address and password. Eg: zak@support9.com. Your IT Administrator will have already enabled 2FA on your Work Microsoft user account, so you should receive the prompt shown below asking you to setup 2FA (Two Factor Authentication).       3. You will then arrive on the Additional Security Verification  page, asking you which security method you would like to use.       4. Select the Mobile app option from the drop-down list and select  Use verification code  from the list of choices, then Click   Set up . Once this has been completed you will be displayed with the message below.  Step 3      1. Now, open the Microsoft Authenticator app on your phone      2. Skip any Introduction screens the app may present, until the  Ready to add your first account? screen or similar appears.      3. Select  Add account  or " + " icon on the top right corner of the app screen. 4. Select the Work or school account option       5. You may be asked to allow the app to use your phone’s camera, click  OK  to allow this. You will be presented with a screen called  Scan QR code  with a square camera box in the middle of the screen.        6. Lift the mobile device so that the QR code on your computer screen sits inside the Scan QR code camera square. 7. As soon as the Authenticator app has scanned the QR code the following screen will appear on the computer screen.  Set up  button is greyed out and the  Next  button is highlighted.   On the Authenticator app on your mobile phone a new account will have been created, displaying 6-digit number that updates every 30 seconds.  This ever-changing number provides the second authentication factor required for 2FA.           8. Click  Next  on your computer screen.       9. You will then be prompted for the 6-digit verification code from the Authenticator app.         10.   Enter the six-digit code displayed on your mobile phone Authenticator app and click  Verify .    11. Select the country from the drop-down list and then enter your mobile telephone number. Click  Next . Thanks for reading this Article, if you are still experiencing issues and nothing has been resolved then please contact the support team.