If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product.

Learn how to record Teams meeting. Capture audio, video, screen sharing activity, and troubleshoot recordings in Microsoft Teams.

Windows Security is pre-installed on Windows 10 and ready for you to use at any time.

Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.

在群组聊天中保留或删除某人; 个性化群组聊天图像; 在 Teams 上与某人聊天以供个人使用; 与通讯组列表或 M365 组中的成员聊天

You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.

Learn how to redeem a Microsoft/Xbox gift card or other code on your mobile device, Windows device, or Xbox console.

Learn how to troubleshoot problems updating Windows. Find answers to common questions and issues installing Windows updates.

System requirements and setup steps for the Phone Link app

Xbox Game Pass Ultimate includes all Game Pass benefits, including more than 100 high-quality console and PC games. New games are added all the time, so there’s always something new to play.