Find your product key to activate Windows. A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

Obtenga información sobre cómo instalar, reinstalar o activar Microsoft 365 u Office 2019 en un equipo PC o Mac.

Learn how Smart charging in Windows can help your battery last longer over time.

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。

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

The Microsoft Teams web app works for most desktop browsers, including Chrome, Firefox, and Internet Explorer.

See how to arrange all your open windows using the mouse, keyboard, or the Snap Assist feature in Windows.

Learn how to manage background activity for apps to help save battery power in Windows.

Learn how to record Teams meeting. Capture audio, video, screen sharing activity, and troubleshoot recordings in Microsoft Teams.