Discover the latest features in Office 2021, including new ways to create content, manage data, and communicate effectively.

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

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Learn how to troubleshoot when the camera is not working in Windows or you see errors 0xA00F4244 or 0x200F4244.

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

Microsoft Support offers assistance for Microsoft products, including how-to articles, videos, and training for various software and devices.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

请执行以下任一操作： 在 “翻译为 ”下拉列表中，选择要将页面翻译成的语言。 默认值是为Microsoft Edge设置的语言。

Learn about what effect closing a Microsoft account might have on your other apps and services.

Windows 10 and 11 contain a large set of emojis. To insert one: Put your cursor where you want the emoji.