Microsoft Authenticator is a mobile app that helps you sign in to all your accounts without using a password. Notes: Microsoft Authenticator is not available for PC or Mac as authenticator apps are typically designed for smartphones for security reasons.

Wondering what multifactor authentication, sometimes known as two step verification, is? This article will explain it clearly.

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.

If you have non-Microsoft accounts, such as for Amazon, Facebook, or Google, you can add them to Authenticator for two-step verification, or if your site or service supports adding an account using a QR code, you can set up Authenticator as a way to sign in.

Microsoft Authenticator helps you sign in to your accounts if you've forgotten your password, use two-step verification or multi-factor authentication, or have gone passwordless on your account.

You can set up an authenticator app to send a notification to your mobile device or to send you a verification code as your security verification method. You aren't required to use the Microsoft Authenticator app, and you can select a different app during the set up process.

If your organization is using multi-factor authentication (MFA) for Microsoft 365, the easiest verification method to use is the Microsoft Authenticator smart phone app. It's just one click instead of typing in a 6-digit code.

Set up an authenticator app as a two-step verification method; Work or school account sign-in blocked by tenant restrictions; Sign in to your work or school account with two-step verification

Two-step verification (sometimes called multi-factor authentication) helps protect you by making it more difficult for someone else to sign in to your Microsoft account. It uses two different forms of identity: your password, and a contact method (also known as security info).

Only limited authentication methods are available in China. Instead of using push notifications for two-step verification, users can set up Authenticator to receive verification codes on their device that they can use to verify their identity.