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

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

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 add all your different accounts to the Microsoft Authenticator app.

If you turn on two-step verification, you'll get a security code to your email, phone, or authenticator app every time you sign in on a device that isn't trusted.

When App Lock is enabled, you'll be asked to authenticate using your device PIN or biometric every time you open Authenticator. App Lock also helps ensure that you're the only one who …

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

Conveniently and securely sign in to all your online accounts using multifactor authentication, passwordless sign-in or password autofill with Microsoft Authenticator.

Microsoft Authenticator can be used not only for your Microsoft account, and work or school accounts, you can also use it to secure your Facebook, Twitter, Google, Amazon, and many …

When you want to sign to the website or application, your device has to prove that it has the private key. After you unlock your private key, your device digitally signs a challenge from the …