注意 Microsoft Authenticator 不 适用于电脑或 Mac，因为出于安全原因，验证器应用是专为智能手机设计的。 了解详细信息。 Microsoft 不再支持超过一年的 Authenticator 版本。 始终使设备保持最新。 中国用户应阅读 如何在中国下载和使用 Microsoft Authenticator。

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

Find solutions for Xbox account and profile issues, manage settings, and get support for your Xbox experience.

Learn how to manage the online safety and privacy settings on the XBOX console for you and every member of your family group.

Support for Windows 10 has ended on October 14, 2025. Learn more about your options for Windows 10.

Summary A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This is a 48‑digit number that lets you regain access to your drive.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Uninstall from Control Panel In search on the taskbar, enter Control Panel and select it from the results. Select Programs > Programs and Features. Press and hold (or right-click) on the program you want to remove and select Uninstall or Uninstall / Change. Then follow the directions on the screen. Need more help? If you can't find an app or program, try the tips in See all your apps in ...

Learn how to use Snipping Tool to capture a screenshot, or snip, of any object on your screen, and then annotate, save, or share the image.

Learn how to use the taskbar features in Windows. Hide the taskbar, pin an app, change the location, and more with taskbar settings.