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：

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

Change or set the default font in Outlook to use whenever creating new messages.

By importing a snapshot of your Google calendar into Outlook, you can see it alongside other calendars in the Outlook Calendar View. To keep the imported calendar up-to-date, subscribe to the Google Calendar in Outlook.

What is a security key? We currently support several designs and providers of security keys using the Fast Identity Online (FIDO2) passwordless authentication protocols. These keys allow you to sign in to your work or school account to access your organization's cloud-based resources when on a supported device and web browser.

借助 Teams 的外部访问，你可以添加或邀请 Teams 组织外部使用 Teams、Teams 个人使用、面向消费者的 Skype 以及Skype for Business一对一聊天的人员。

Use inbox rules to automatically perform specific actions on email messages that come into your inbox.

Shrink the OS partition and prepare the disk for a new recovery partition. To shrink the OS, run diskpart

Describes how to use the clean boot process to troubleshoot a problem in Windows 8.1, Windows 8, Windows 7, or Windows Vista.

Learn how to record or create macros and execute them using buttons or keyboard shortcuts in Microsoft Office applications.