Learn how to log in to Microsoft Teams with your Microsoft 365 account. This step-by-step guide from Microsoft Support walks you through the process of accessing Teams on desktop, web, and mobile devices.

Learn how to redeem your Microsoft Rewards points for a huge variety of great products and sweepstakes.

Play MP4 files in Windows 10 by right-clicking the file and choosing what application to open it with.

Find out how to view your system information on Microsoft Support, including hardware and operating system details.

系统要求. 手机连接 体验从 Windows 电脑和 手机连接 开始。 从电脑中，可以使用预安装在设备上的连接至 Windows 应用或从 Google Play 或 Samsung Galaxy Store 下载的应用连接到选择 Android、Samsung、HONOR、OPPO 和华硕设备。

With Microsoft Forms, you can send your form or quiz to students, parents, and colleagues and collect their responses in a few different ways, depending upon your needs.

With External Access for Teams, you can add or invite anyone outside of your Teams org who uses Teams, Teams for personal use, Skype (for consumers), and Skype for Business to a one-to-one chat.

You can use drag and drop to open email messages saved with the extension .eml, .msg, .oft in new Outlook for Windows.

A list of devices supported with Link to Windows and other features in the Phone Link app.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.