Find out how to submit a request for a refund for a purchase of digital Xbox content.

Learn different ways to locate your BitLocker recovery key in Windows, and learn about how BitLocker might have been activated on your system.

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

Find out how to customize Xbox Game Bar and enjoy a PC gaming layout that’s uniquely yours.

How to use the SUBTOTAL function in Excel to return a subtotal in a list or database.

Learn how to open and run DxDiag.exe on Windows to collect device information and troubleshoot DirectX sound and video issues.

With Edge Chromium, you can add multiple profiles. Profiles allow multiple users to operate in a shared environment while maintaining access to their personalized browser settings, bookmarks, and extensions.

Personalize the colors of the Start button and taskbar (this option is only available if you select Dark or Custom as your Windows color).

Windows Security is pre-installed on Windows 10 and ready for you to use at any time.

从确保设备可以运行 Windows 11 到备份文件和安装 Windows 11，了解如何为 Windows 11 升级做好准备。