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

Training: Learn how to create a spreadsheet, enter data, and create a chart in Excel.

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

Learn how to get the latest Windows updates. Find answers to FAQ about updating Windows to keep your PC up to date.

Discover how to boost your browsing speed and save battery life with Microsoft Edge's performance features, such as sleeping tabs and efficiency mode.

Learn how to identify a phishing scam, designed to steal money via fake emails.

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.

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

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