Learn how to manage your Microsoft subscription, including billing, renewal, and cancellation options.

If you already redeemed a product key, you're simply reinstalling the apps, or you know you have an assigned license through work or school, you can skip ahead and go to the section sign in to download and install Microsoft 365 or Office.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

通过云游戏，你可以在 Android 设备、Windows 设备、Xbox 主机以及运行 iOS 和 iPadOS 设备的浏览器上体验 Microsoft 外部测试版模拟器提供的全部功能。

瞭解 Xbox 雲端遊戲在 Android、Apple 和 Windows 裝置，以及 Xbox 主機和智慧型手機電視上的運作方式。

了解如何使用 Android、iOS 或 Windows 设备在 Xbox 上玩云游戏。

Office 2024 is sold as a one-time purchase (without a subscription), which means you pay a single, up-front cost to get Office apps for one computer (PC or Mac). One-time purchases also will not receive any new features and don't have an upgrade option, which means if you plan to upgrade to the next major release, you'll have to buy it again.

了解如何从 Microsoft 365 商业版订阅下载和安装所需的应用。

了解如何為您的 Xbox 裝置申請維修服務。

Copilot 可以分析上传到聊天框中的文件的内容。 这意味着 Copilot 可以在使用 PowerPoint 演示文稿、PDF、Excel 电子表格、照片等时提供新的见解。