Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

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

Learn how to make items on the screen appear larger by using Magnifier in Windows.

In Microsoft Forms, you can send forms and quizzes to students, parents, and colleagues to collect form responses.

Learn how Outlook helps to prevent duplicate contacts and how to remove any duplicates that occur.

Learn how to use Windows accessibility features to make your mouse, keyboard, and other input devices easier to use.

Download the latest internet browser recommended by Microsoft from the official support page.

If your camera is unable to capture the QR code, you can manually add your account information to the Microsoft Authenticator app for two-factor verification.

Learn how to use the Analysis ToolPak to perform complex Excel data analysis. Explore the various data analysis functions available in Excel.

Important: Reactions are only available to individuals using a work or school account in Outlook with a qualifying Microsoft 365 subscription.