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

This is called two-step verification or multi-factor authentication. As the only way to sign in - just tap an approval on your phone to sign in. This is called going passwordless. Just follow the …

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

If your organization supports two-factor verification or multi-factor authentication sign-in, you can set up your work or school accounts to use Authenticator as one of the verification methods.

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 the sign-in for multifactor authentication and troubleshoot most common issues using a screen reader.

Aug 29, 2025 · Cause Windows updates released on and after August 29, 2025 include added security protections that enforce checks on SIDs, causing authentication to fail when devices …

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.

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

Learn how to fix email issues for error code 5.7.515 when sending email to Outlook.com (the sending domain does not meet the required authentication level).