Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.

Discover how to boost your browsing speed and save battery life with Microsoft Edge's performance features, such as sleeping tabs and efficiency mode.

Learn more about the privacy settings for speech, voice activation, inking, and typing in Windows.

Learn how to use Feedback Hub to report problems or send suggestions to Microsoft.

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

Try these steps if you’re having trouble buying apps, games, or downloads from the Microsoft Store.

To get someone's attention in a channel conversation or a chat, @mention them. Just type @ before their name and then select them from the menu that appears.

获取有关 Windows 安全的帮助; 在 Microsoft Edge 中查看和删除浏览器历史记录; 删除和管理 Cookie; 重新安装 Windows 时安全移除有价值的内容

可以使用拖放功能打开使用 windows新版 Outlook 中的扩展名 .eml .msg .oft 保存的电子邮件。

This article describes how to permanently remove the contents of the Temporary Internet Files folder from your computer. Watch a video about how to delete the contents of the Temporary Internet Files folder yourself.