Manually add an account to the Microsoft Authenticator app
Open the Authenticator app, select Add account from the Customize and control icon in the upper-right, select Other account (Google, Facebook, etc.), and then select OR ENTER CODE MANUALLY. Enter an Account name (for example, Google) and type the Secret key from Step 1, and then select Finish.
Set up your Microsoft 365 sign-in for multi-factor authentication
By setting up MFA, you add an extra layer of security to your Microsoft 365 account sign-in. For example, you first enter your password and, when prompted, you also type a dynamically generated verification code provided by an authenticator app or sent to your phone.
Applies To:
Office for business, Microsoft 365 admin