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

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

Learn how reserved storage works in Windows to conserve disk space for temporary files, caches, and other files.

了解 Microsoft 365 订阅、Office 2016 和免费 Office Online 应用之间的区别。

Learn what to do if you receive a message in Mail or Calendar for Windows 10 that your account settings are out of date.

Learn how to turn on HDR video streaming to watch high dynamic range (HDR) content on your Windows PC.

Summary. This security update resolves vulnerabilities. To learn more about the vulnerabilities, see the following security advisories: CVE-2024-35272 - SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability

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.

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

New to Xbox gaming on PC? Here's how to get started. Find out how to play with cloud gaming on devices you already have