Discover the latest features in Office 2021, including new ways to create content, manage data, and communicate effectively.

Learn how to download Microsoft Support and Recovery Assistant to help fix problems with Microsoft 365, Office, or Outlook.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

This page provides phone numbers of Microsoft customer service.

Learn how to activate Windows using an internet connection, automated system, or live support advocate.

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

Download information. The following files are available for download from the .NET Download site: Download the Microsoft .NET Framework 4.8 offline installer package now.

Xbox Support offers help for Xbox, Game Pass, and billing questions. Get advice and customer service in the Xbox Support community.

Find out how to change privacy settings for your camera and microphone in Windows.

了解如何在电脑或 Mac 上安装、重新安装或激活 Microsoft 365 或 Office 2019。