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.

Select the type of troubleshooting you want to do, then select Run the troubleshooter.

重要: 如果计算机已连接到网络，则网络策略设置可能会阻止你执行这些步骤。仅使用系统配置实用工具在 Microsoft 支持工程师的指导下更改计算机上的高级启动选项。 使用系统配置实用工具可能会使计算机不可用。

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。

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Windows 10, version 21H2 update history; July 9, 2024—KB5040427 (OS Builds 19044.4651 and 19045.4651) June 11, 2024—KB5039211 (OS Builds 19044.4529 and 19045.4529)

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。

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