Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.

Notes: Security info doesn't support using phone extensions. Even if you add the proper format, +1 4255551234X12345, the extensions are removed before the call is placed. If you don't see a phone option, it's possible that your organization doesn't allow you to use this option for verification. In this case, you'll need to choose another method or contact your organization's help desk for more ...

了解如何新增安全性資訊以保護您的 Microsoft 帳戶。

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Xbox Support 提供有关 Xbox、Game Pass 和账单问题的帮助，并通过社区提供建议和客户服务。

Want to add a padlock to your email messages? You can use encryption and digital signatures in new Outlook, classic Outlook, and Outlook on the web for work or school accounts to increase the security of messages. Encrypting an email message in Outlook means it's converted from readable plain text into scrambled cipher text. Only the recipient who has the private key that matches the public ...

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

If you can launch the Microsoft Store but you are just having trouble finding or installing an app, see I can't find or install an app from Microsoft Store. Need more help? Contact Support For technical support, go to Contact Microsoft Support, enter your problem and select Get Help.

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 authenticate using your device PIN or biometric every time you open Authenticator.

Note: First, ensure that the Link to Windows app on your Android device is updated to the latest version and Phone Link on your PC. How do I check I'm running the latest version of Link to Windows?