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

The Microsoft Authenticator app backs up your account credentials and related app settings, such as the order of your accounts, to the cloud.

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 …

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

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.

What are passkeys? Passkeys are a replacement for your password. With passkeys, you can sign into your Microsoft personal account or your work/school account using your face, fingerprint, …

Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

Learn how to sign into your PC with Windows Hello using a PIN, facial recognition, or fingerprint.

Make sure notifications are enabled for the app. Check your text messages for authentication codes which may have arrived silently. Outdated app version: Using an outdated version of the …

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.