Update Surface devices and Windows. Download the latest drivers and firmware updates to keep your Surface devices performing their best.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。

System requirements and setup steps for the Phone Link app

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

We have reimagined, simplified, and integrated the Rewards experience on Xbox, centering it around gameplay and activities players love. You can now find your Rewards activities on your Xbox console, Xbox mobile app, and Xbox app for PC.

Learn how to reset or change your Microsoft account password. Get help with a forgotten Microsoft account password.

PC 正常性チェック アプリは、お使いの Windows デバイスの正常性に関する最新の情報を提供して、デバイスのパフォーマンス向上のための対処や、パフォーマンス問題のトラブルシューティングに役立ちます。

Create an ISO file for Windows 10. Unlike in previous versions of Windows, you’ll need to use the media creation tool to create an ISO file to install Windows 10.