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：

How to open all of your Favorites Bar shortcuts in the Microsoft Edge web browser.

Get help and support for Microsoft Edge. Find Microsoft Edge support content, how-to articles, tutorials, and more.

Follow these steps to temporarily turn off Defender antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats.

The Planner app in Microsoft Teams brings together all your tasks and plans across the Microsoft 365 ecosystem in a single convenient location. It helps you manage tasks more efficiently for individual plans and team initiatives, as well as larger scale projects that are aligned to goals and key strategic objectives.

Learn how to sign into your PC with Windows Hello using a PIN, facial recognition, or fingerprint.

You can refer to the contents of cells in another workbook by creating an external reference formula. An external reference (also called a link) is a reference to a cell or range on a worksheet in another Excel workbook, or a reference to a defined name in another workbook.

Troubleshoot problems you might be having with your mouse or keyboard, or other wireless device in Windows.

Choose how you want emails displayed in the message list, such as whether you want emails displayed as individual messages or as conversations.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.