The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

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.

Learn how to set up your user account for multifactor authentication with Microsoft 365.

You open the app on your smartphone, it shows you a unique, dynamically created 6-digit number that you type into the site and you're in. If somebody else tries to sign in as you, however, …

Learn how to add all your different accounts to the Microsoft Authenticator app.

Multi-factor authentication (MFA) helps you to access your accounts more securely. It's a way to prove that you are who you say you are. Because passwords can be forgotten, stolen, or …

Learn how you can use the free Microsoft Authenticator app to sign in to all your accounts without using a password.

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 …

What is two-step verification in Microsoft accounts? Two-step verification (sometimes called multi-factor authentication) helps protect you by making it more difficult for someone else to sign in …

Open the app, go to the app's top-level menu, and then select Send feedback. After that, contact Support or go to the Microsoft Authenticator app forum and explain the problem you're seeing …