Note: Cross-device syncing of Microsoft Entra user activity history will stop starting in January 2024.Microsoft will stop storing this data in the cloud, aligning with the previous change for Microsoft accounts (MSA) in 2021. The timeline user experience was retired in Windows 11, although it remains in Windows 10.

重要: 如果通过 Microsoft 365 (或Office 365) 计划拥有订阅，则与 2021 Office 2021 或 Office LTSC 不同。例如，如果已在使用 Microsoft 365 或者组织已将以前名为 Office 365 专业增强版) 的企业 ( Microsoft 365 应用版 部署到组织中的用户，则无需 Office 2021 或 2021 Office LTSC 。

查找 Microsoft Excel 帮助和学习资源。 了解如何有效使用 Excel 的指导文章、指南、培训视频和提示。

App & browser control in Windows Security provides the settings for Microsoft Defender SmartScreen, which helps protect your device from potentially dangerous apps, files, websites, and downloads.

Learn about the tools and features that Xbox provides in our quest to make gaming accessible to players of all abilities.

Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows、Surface 等操作方法的文章、视频和培训。

Apply recommended actions. In the Accessibility pane, you'll see a list of errors and warnings, with how-to-fix recommendations for each.. To quickly correct the issues, apply one of the recommended actions. For more information on how the findings are categorized, see Rules for the Accessibility Checker. In the Accessibility pane, select an issue under Warnings or Errors.

扩展或加载项是自定义浏览器体验并为你提供更多控制权的简单工具。 下面介绍如何在 Microsoft Edge 中添加、关闭和删除扩展或加载项 。

从 Microsoft 获取免费的 Windows 主题，以个性化设置电脑的背景、颜色和声音。

警告: 在安全核心电脑上关闭内存完整性会将设备从安全核心状态中取出。如果选择继续使用设备而不解决驱动程序问题，则可能会发现驱动程序支持的功能不再起作用，这可能会产生从可忽略到严重等范围的后果。