Editing Windows XP (section)

===Backward compatibility===
To enable running software that targets or locks out specific versions of Windows, "Compatibility mode" was added. It allows pretending a selected earlier version of Windows to software, starting at Windows 95.<ref>{{cite web |title=Windows XP Program Compatibility Wizard |url=https://www.serverwatch.com/guides/windows-xp-program-compatibility-wizard/ |website=ServerWatch |access-date=November 13, 2021 |date=March 12, 2002 |archive-date=November 13, 2021 |archive-url=https://web.archive.org/web/20211113012030/https://www.serverwatch.com/guides/windows-xp-program-compatibility-wizard/ |url-status=live }}</ref> This feature was first introduced in [[Windows 2000]] Service Pack 2, released five months before the release of Windows XP, and was backported from prerelease Windows XP builds. Unlike with Windows XP, however, it was hidden from the operating system as it was not enabled by default and had to be manually activated through the [[regsvr32|Register Server]] utility. It was also only available to administrator users.<ref>{{cite web |title=How to Enable Application Compatibility-Mode Technology in Windows 2000 Service Pack 2 |url=https://www.activewin.com/tips/win2000/1/2000_tips_43.shtml |website=Active Win |access-date=November 13, 2021 |archive-url=https://web.archive.org/web/20010818054705/http://www.activewin.com/tips/win2000/1/2000_tips_43.shtml |archive-date=August 18, 2001 |language=en |date=2000}}</ref> Windows XP has this feature activated out of the box and also grants it to regular users.