Training: Get started with SharePoint in Microsoft 365. At office.com, sign in to SharePoint, then select the SharePoint tile.

Learn how to reinstall Windows on your PC and how activation works after it's installed.

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

本文介绍如何在 Windows 8.1、Windows 8、Windows 7 或 Windows Vista 中使用系统文件检查器工具来解决丢失或损坏的系统文件的问题。

Find out how to connect your Xbox Wireless Controller to a Windows device.

How to create, edit, and run Excel macros to automate data entry and tasks.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

了解如何安装 Windows 11，包括在“设置”中访问 Windows 更新页的建议选项。

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.

Learn how to get started with PowerPoint for the web from Office.com and create presentations online.