Windows on Windows: Difference between revisions

Revision as of 22:56, 23 June 2019

Revision as of 23:05, 23 June 2019

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| operating system = [[Microsoft Windows]]

| genre = [[Compatibility layer]]

| license = [[Proprietary software|Proprietary]] [[commercial software]]

}}

In [[computing]], '''Windows on Windows''' (commonly referred to as '''WOW''',<ref>{{cite web|url=http://support.microsoft.com/kb/181333|title=WOW Environment Remains in Memory After Quitting 16-Bit Program|website=Support|publisher=[[Microsoft]]|accessdate=February 7, 2017|date=February 22, 2007|deadurl=yes|archiveurl=https://web.archive.org/web/20071023060218/http://support.microsoft.com/kb/181333|archivedate=October 23, 2007}}</ref><ref>{{cite web|url=http://support.microsoft.com/kb/153544|title=Starting 16-Bit WOW Subsystem on Windows NT Server|date=November 1, 2016|accessdate=February 7, 2017|website=Support|publisher=[[Microsoft]]|deadurl=yes|archiveurl=https://web.archive.org/web/20070509051612/http://support.microsoft.com/kb/153544|archivedate=May 9, 2007}}</ref><ref>{{cite web|url=https://support.microsoft.com/kb/220159|title=Disabling the MSDOS and WOWEXEC Subsystems on Terminal Server|date=November 1, 2006|website=Support|publisher=[[Microsoft]]|accessdate=February 7, 2017|deadurl=no|archiveurl=https://web.archive.org/web/20080113000651/http://support.microsoft.com/kb/220159|archivedate=November 30, 2008}}</ref>) is a [[compatibility layer]] of [[32-bit]] versions of the Microsoft [[Windows NT]] family of [[operating system]]s that extends [[Virtual DOS machine#Windows NTVDM|NTVDM]] to provide limited support for running [[legacy code|legacy]] [[16-bit]] programs written for [[Windows 3.x]] or earlier. There is a similar subsystem, known as [[WoW64]], on 64-bit Windows versions that runs 32-bit programs.