App & browser control in Windows Security provides the settings for Microsoft Defender SmartScreen, which helps protect your device from potentially dangerous apps, files, websites, and downloads.

Check the Xbox services, games, and apps for any service outages.

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Learn about the tools and features that Xbox provides in our quest to make gaming accessible to players of all abilities.

获取 Microsoft Edge 的帮助和支持。 查找 Microsoft Edge 支持内容、操作方法文章、教程等。

Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows、Surface 等操作方法的文章、视频和培训。

準備安裝了嗎？ 開始之前，請確定您的PC或Mac符合 系統需求。. 如果您已兌換產品密鑰、只是重新安裝應用程式，或是知道您已透過公司或學校指派授權，您可以跳到登入以 下載並安裝 Microsoft 365 或 Office 章節。 不過，如果這是您 第一次 安裝 Microsoft 365或 Office，您可能需要先執行一些步驟。

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Các bản sửa lỗi hoặc giải pháp thay thế cho sự cố gần đây trong Excel cho Windows

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