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

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

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 …

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

What is Microsoft Authenticator lock? App Lock helps keep your one-time verification codes, app information, and app settings more secure. When App Lock is enabled, you'll be asked to …

Find out how to Get started with the Microsoft Authenticator app so that you can use notifications to sign in, instead of texts and phone calls. Learn How to use two-step verification with your …

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.

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