Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

扩展或加载项是自定义浏览器体验并为你提供更多控制权的简单工具。 下面介绍如何在 Microsoft Edge 中添加、关闭和删除扩展或加载项 。

查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。

Get started with Microsoft Teams (free). Explore your options, find out what’s new, browse help topics, and more.

Learn how to use Microsoft Edge for mobile devices, sync your browser data, and get answers to common questions.

IMPORTANT This update is not needed and will not be offered if your Windows Recovery Environment (WinRE) meets any of the following conditions: If the WinRE recovery partition does not have sufficient free space.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

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Learn how to install Skype for Business on your Windows computer, mobile device, or Macintosh.

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