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：

Learn how to troubleshoot problems updating Windows. Find answers to common questions and issues installing Windows updates.

了解如何在电脑上重新安装 Windows，以及安装 Windows 后激活的工作原理。

Learn about what effect closing a Microsoft account might have on your other apps and services.

If you don't see your picture at the top of screen, check to see if ad blocking is turned on. Sometimes this prevents the picture from showing. Select Sign out. I want to stop signing in automatically.

Learn how to back up apps, settings, files, photos, and Microsoft Edge favorites and preferences on your Windows PC.

The new Outlook for Windows brings the latest features, intelligent assisted capabilities and a new modern and simplified design to your Outlook app.

Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

How to display desktop icons in Windows. Note: If you are in tablet mode, you may not be able to see your desktop icons properly.You can find the program by searching for the program name in File Explorer.

Keyboard shortcuts are keys or combinations of keys that provide an alternate way to do something you'd typically do with a mouse. Here’s the list for the new Microsoft Edge and Microsoft Edge for Mac.