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

Follow these steps to temporarily turn off Defender antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats.

Updates to the default screen and sleep settings now help you use energy more efficiently and extend battery life. You can find efficiency settings in Windows 11 at Settings > System > Power & battery.. For a guided walkthrough of how each of the power and battery settings can improve your device's performance, click the button to open the Get Help app:

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

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 why it's important to have a backup, and how Windows Backup can help you keep your files and settings safe.

Wenn das neueste Windows-Update für Ihr Gerät bereit ist, steht es auf der Seite Windows Update unter Einstellungen zum Download zur Verfügung.

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

Word 2021 for Windows gives you new ways to create compelling content. This article provides an overview of the new features you can discover.

Learn how the Photos app for Windows lets you view photos and videos from your PC alongside those from OneDrive, and keeps them organized by date, album, or folder.