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

We've put together this article to describe fixes for the most common problems. Your Azure Active Directory (Azure AD) organization can turn on two-step verification for your account. When two-step verification is on, your account sign-in requires a combination of the following data: Your user name. Your password.

Blue Screen errors (also sometimes called black screen errors or STOP code errors) can occur if a serious problem causes Windows to shut down or restart unexpectedly. You might see a message that says, "Windows has been shut down to prevent damage to your computer" or a similar message.

You can use Authenticator to sign in to your Microsoft personal, work, school or other accounts. Authenticator can be used three ways: As a way to verify sign in if you forget your password. As a way to sign every time, by using a one-time password code to increase account security.

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