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。

Find out how to use the Xbox app to install and play PC games on your Windows device, chat with friends, and play Xbox console games remotely or from the cloud.

Hotmail är nu Outlook.com. Lär dig hur du loggar in för att komma åt ditt Outlook.com-, Hotmail-, Live- eller MSN-e-postkonto.

Play music and video in more formats and stream it to more places with Windows Media Player 12.

See some of the most common upgrade and installation errors for Windows 10 and Windows 11, and what you can do to try to fix them.

Learn how to delete and restore files in OneDrive. Recover deleted files or folders from the OneDrive recycle bin.

使用 vlookup、hlookup 和其他函数（如 index 和 match）根据您输入的值搜索和查找数据。 本文将让您快速回顾 vlookup，然后链接到更多内容。

Get info on how to find your IP address in Windows. Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Learn how to join a Microsoft Teams meeting if you don't have an account. Join a Teams meeting as a guest in the Windows app or on the web.

Set up the Microsoft Authenticator app from the Security info page. Depending on your organization’s settings, you might be able to use an authentication app as one of your security info methods.