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

Learn more about updates for Windows 10 version 1903, including improvement and fixes, any known issues, and how to get the update.

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。

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

了解如何管理 Microsoft 帐户安全信息和排查验证码问题。

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

Some extensions change browser settings like your default search engine, new tab page, and other types of site data. To prevent extensions from changing the preferences you set up when you installed Microsoft Edge , the browser automatically turns off extensions that might change your preferred settings.. You can change settings for your extensions at any time.

Learn how to download files from the web, change your default download location, and find files you've downloaded on your PC using Internet Explorer.

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

The Basics of Search. Returning search results is no easy feat, and involves complex, near-instantaneous algorithmic calculations. A search for something as simple as “cat” could yield over 55 million results.