Windows Hello. Windows Hello 可使你通过你的面部、虹膜、指纹或 PIN 登录到你的设备、应用、在线服务和网络。 即使你的 Windows 设备可以使用 Windows Hello 生物识别，也不必这么做。

了解在 Windows 中查找 BitLocker 恢复密钥的不同方法，并了解如何在系统上激活 BitLocker。

How to add and request read receipts and delivery notifications in Outlook.

Learn how to use VLOOKUP, INDEX, or MATCH to search for data in Excel. Get a quick refresher and more tips from Microsoft Support.

Outlook 网页版是组织使用的基于 Web 的 Outlook 版本。你需要使用工作或学校帐户登录才能访问此基于 Web 的 Outlook 版本。 你的工作或学校帐户通常由组织中的某人分配给你。

Learn how to manage extensions in Microsoft Edge, including adding, disabling, or removing them as needed.

Learn how to install a scanner and use it to scan pictures and documents in Windows 10.

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

This article tells you how to add email accounts to the Mail and Calendar apps so you can start sending and receiving email and creating and managing events.

Use Find my device to locate and lock your lost or stolen Windows devices.