How do I switch to using the Authenticator app instead of receiving a phone call?


You can adjust your MFA settings at any time from within your MSU Denver Office 365 account, including what method(s) you use as your second authentication factor. If you have multiple authenticators, you can also select which one you are normally prompted for when logging in.  

Before you begin...

Make sure you have a mobile device such as a smart phone or tablet that is connected to a Wi-fi or cellular data service. You will install the Microsoft Authenticator app on this mobile device.


  1. Navigate to
  2. Log in using your MSU Denver email address and password.
  3. Click the bubble in the top-right corner of the window where either your picture or your initials are displayed.
  4. From the menu that opens, click View Account.
    Appearance of the account settings drop dwon
  5. On the next page, find the Security info panel and click Update info.