Setting up the Microsoft Authenticator App

Besides SMS (text message), you can also use the Microsoft Authenticator app as one of your security info methods. You aren't required to use the Microsoft Authenticator app, but it is another option. It can be especially useful when you need to log in from other countries where your cell phone plan doesn’t work if you reside in different countries during parts of the year.

Important: 

·        If you have set up the Microsoft Authenticator app on five different devices or if you've used five hardware tokens, you won't be able to set up a sixth one, and you might see the following error message:

·        You can't set up Microsoft Authenticator because you already have five authenticator apps or hardware tokens. Please contact your administrator to delete one of your authenticator apps or hardware tokens.

To set up the Microsoft Authenticator app

Sign into your work or school account and then go to your My Account portal.

Select Security info in the left menu or by using the link in the Security info pane. If you have already registered, you'll be prompted for two-factor verification. Then, select Add method in the Security info pane.