Microsoft Authenticator Estimated reading: 1 minute 188 views Contributors What Is Microsoft Authenticator? Microsoft Authenticator is a two-factor authentication (2FA) app that helps protect your accounts by requiring a second step of verification after you enter your password which can be one of the following methods: A time-based one-time password (TOTP) code A push notification you approve on your phone LBiometric verification (like fingerprint or face recognition) GuidesInstall Microsoft Authenticator App (Android) Add account to Microsoft Authenticator (Android) Install Microsoft Authenticator App (Apple) Add account to Microsoft Authenticator (Apple) Microsoft Authenticator - PreviousChange your password for a Microsoft 365 Family or Personal accountNext - Microsoft AuthenticatorInstall Microsoft Authenticator App (Android)