Play MP4 files in Windows 10 by right-clicking the file and choosing what application to open it with.

Learn how to install Windows 7 Service Pack 1 (SP1). Includes info about how to get the download, requirements, and more.

Find your product key to activate Windows. A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

Microsoft Rewards offers and redemption catalogs vary across regions. The following is a list of countries/regions in which Microsoft Rewards is currently available:

Learn more about how to print web pages and documents in Microsoft Edge.

Learn about what effect closing a Microsoft account might have on your other apps and services.

Microsoft's products and services work best if you use the same language and region across all your devices, and in all of your app and Store settings.

With Microsoft Edge, you can turn on sync to browse the web on all your devices, keep your favorites organized, and more.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Microsoft .NET Framework 4.8.1 is a highly compatible and in-place update to .NET Framework 4.8. It includes native support for the Arm64 architecture (Windows 11+), accessibility improvements as well as other improvements.