Learn how to use the PC Health Check app to help you improve your device performance.

Erfahren Sie, wie Sie die Windows Update-Problembehandlung ausführen, um Fehler beim Herunterladen oder Installieren von Windows zu beheben.

Learn how to access and manage your Windows sign in options. Use a password, Windows Hello, or a security key to unlock your device.

The CELL function returns information about the formatting, location, or contents of a cell. For example, if you want to verify that a cell contains a numeric value instead of text before you perform a calculation on it, you can use the following formula:

Find out how to submit a case review and learn more about your Xbox enforcements.

Learn how to change app notifications, banners, and sound settings in Windows.

如果 Windows 10 中的 Microsoft Store 无法启动，请尝试上述故障排除步骤。

If your camera is unable to capture the QR code, you can manually add your account information to the Microsoft Authenticator app for two-factor verification.

Data Execution Prevention (DEP) is a technology built into Windows that helps protect you from malicious code launching from areas of memory that have been designated as for data only.

Learn how to use Windows accessibility features to make your mouse, keyboard, and other input devices easier to use.