Without the purchase of additional licenses, that copy of Windows XP may not be installed on additional computers. For example, if that copy of Windows XP were to be shared with another person and installed on that other person's computer, that would constitute casual copying.

A hotfix is available for various issues that prevent successful product installation or upgrade by using Windows Installer on computers that are running Windows XP, Windows Server 2003, Windows Vista, or Windows Server 2008.

Describes the request for Windows Genuine Advantage validation that occurs when the user downloads updates for Windows XP or Windows Vista. Provides information about how to respond to the request.

Describes the Application Compatibility Update for Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 that is dated April 2011.

If you encounter a Windows Genuine Advantage (WGA) message that there is a problem with the product key or the volume license key for your installation of Microsoft Windows XP or Windows Vista, use one of the following methods to resolve the issue.

Describes the Application Compatibility Update for Windows XP Professional x64 edition, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, Windows Embedded Standard 7, and Windows Server 2008 R2 that is dated October 2010.

This section summarizes resources for customers who are running Windows XP, Windows Vista, Windows 8, or Windows Server 2003. At the time of release of this advisory (June 13, 2017), these platforms are no longer in mainstream or extended support.

When you receive the message to press R to repair Windows by using the Recovery Console, press the R key. Select the Windows installation that you want, and then type the administrator password when prompted.

Office 2013 and Office 2016 can't be installed on Windows XP or Windows Vista. Office 2013 and Office 2016 works on Windows 7, Windows 8, or Windows 10.

Explains how to correct an issue that occurs if you run a repair installation of Windows XP before you first uninstall a later version of Internet Explorer. In this scenario, the later version of Internet Explorer no longer works.