Microsoft Authenticator acts as a secure repository for your account credentials to help you authenticate and access various applications conveniently. Authenticator may list inactive accounts that are created by other applications that use Authenticator for single sign-on support.

Detailed information about downloading and using Microsoft Authenticator in China. The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Using a one-time password code increases account security. This is called two-step verification. Add Authenticator as the only way to sign in - just tap an approval on your phone to sign in. This is called going passwordless.

See Repair or Remove programs in Windows. In Microsoft Store, select Library. Find the app you want to reinstall, and then select Install. Select the Close (X) button in the upper-right corner of the app window to close it. Then, reopen the app.

Learn how to use Azure Authenticator with Microsoft 365. It makes 2-step verification really easy!

First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open. The troubleshooter provides steps for you to follow. If a program isn't listed in the uninstall options, you'll be asked for that program's product code.

Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows 11, Surface, and more.

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. Before you can use Authenticator as a way to sign in, you need to download the app and have already added Authenticator to your accounts.

Learn why you might not be able to find or install some of the apps in Microsoft Store.

Conveniently and securely sign in to all your online accounts using multifactor authentication, passwordless sign-in or password autofill with Microsoft Authenticator. Learn more about Microsoft Authenticator. How to use Single Sign On with your Microsoft Account via Link to Windows on Android?