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Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.

Learn how to install Office 2010, or install and remove individual Office programs or components for both 32-bit and 64-bit versions of Office.

If you're moving from a Windows 7 or Windows 8.1 PC to a new Windows device, you'll find that the best way to get apps and games is through Microsoft Store.

Find answers to top questions about upgrading to Windows 11, from the minimum hardware requirements to where to find the upgrade.

Learn how to use and install mobile apps on your Windows 11 PC with the Windows Subsystem for Android™.

Learn how to reinstall Windows on your PC and how activation works after it's installed.

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