Windows 11, version 22H2; July 25, 2024—KB5040527 (OS Builds 22621.3958 and 22631.3958) Preview; July 9, 2024—KB5040442 (OS Builds 22621.3880 and 22631.3880)

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即使已开启其他防火墙，开启 Microsoft Defender 防火墙也很重要。 它保护你免遭未经授权的访问。 若要打开或关闭 Microsoft Defender 防火墙，请执行以下操作：

Here are a few different ways to find help for Windows. Search for help - Enter a question or keywords in the search box on the taskbar to find apps, files, settings, and get help from the web.

Excel 中的“分析数据”功能可用于通过高级视觉摘要、趋势和模式理解数据。 只需单击数据区域中的单元格，然后单击“开始”选项卡上的“分析数据”按钮即可完成操作。 Excel 中的“分析数据”功能将分析数据，并在任务窗格中返回与其相关的有趣的视觉对象。

Microsoft doesn't make or support Outlook Express anymore. But the Mail Migration add-on can help you move your email and contacts over to Outlook.com. The add-on automatically moves your email and contacts, and you can keep your current email address.

Check out the system requirements to see if your PC can run Windows 7.

Data Execution Prevention (DEP) is a technology built into Windows that helps protect you from malicious code launching from areas of memory that have been designated as for data only.

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

了解 Windows 中的恢复选项。 查明如何重置电脑、回退到以前版本的 Windows 或使用介质重新安装 Windows。