Get answers to some basic questions about what two-step verification is, and how to set it up and use it to help keep your Microsoft account more secure.

通过 Wi-Fi 与其他设备共享 Internet 连接，将 Windows 电脑变成移动热点。 你可以共享 WLAN、以太网或手机网络数据连接。

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

激活有助于验证你的 Windows 副本是否为正版，且未在超过 Microsoft 软件许可条款所允许数量的设备上使用。 本文将帮助你找出并改正 Windows 中常见的激活错误。

注意: 本文重点介绍如何通过局域网（或 LAN）共享文件或文件夹，例如在家庭或工作区内连接的计算机。如果你尝试了解如何通过 Internet 共享文件，例如与朋友或家庭成员共享文件，OneDrive 提供了实现此目的的简单方法。

Add a delivery and return address to a single envelope, set printer options, adjust for envelope size, and save or print.

How to use the SUMPRODUCT function in Excel, one of Excel’s math and trig functions, using multiplication, addition, subtraction, and/or division to return the sum of the products of corresponding ranges or arrays.

Teams in Microsoft Teams are collections of people, content, and tools surrounding different projects and jobs.

Lists all Excel functions by their category, such as Logical functions or Text functions.

Learn how to add members to your family group including child and adult accounts.