Describes a Windows Defender update package for Windows Server 2019, Windows Server 2016, and Windows 10.

Get started with news and interests, choose how weather looks on your taskbar, turn it on and off, personalize your feed and choose interests and followed publishers.

KB5034441: Windows Recovery Environment update for Windows 10, version 21H2 and 22H2: January 9, 2024

Find everything you need to manage your Xbox account, profile, and more.

Get answers to all of your OneNote questions with our how-to articles, training videos, and support content.

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。

准备好安装了吗？ 在开始之前，请确保电脑或 Mac 满足 系统要求。. 如果你已兑换产品密钥，只需重新安装应用，或者知道你已通过工作或学校分配了许可证，则可以跳到登录部分 ，下载并安装 Microsoft 365 或 Office。 但是，如果是 首次 安装 Microsoft 365 或 Office，可能需要先执行一些步骤。

使用电脑健康状况检查应用可以获取有关 Windows 设备运行状况的最新信息，从而帮助你采取措施提高设备性能和排查性能问题。

Windows 11, version 21H2; July 9, 2024—KB5040431 (OS Build 22000.3079) June 11, 2024—KB5039213 (OS Build 22000.3019) May 14, 2024—KB5037770 (OS Build 22000.2960)

Focus is a new feature in Windows 11 that helps you minimize distractions. To help you stay on track, it integrates with the Clock app with features like a focus timer and music integration.