sabremos la version instalada ejecutando el comando "winver" versiones existentes de todos los windows: Releases Windows NT releases Version Marketing name Editions Release date RTM build NT 3.1 Windows NT 3.1 Workstation (named just Windows NT ), Advanced Server 27 July 1993 528 NT 3.5 Windows NT 3.5 Workstation , Server 21 September 1994 807 NT 3.51 Windows NT 3.51 Workstation, Server 30 May 1995 1057 NT 4.0 Windows NT 4.0 Workstation, Server, Server Enterprise Edition, Terminal Server, Embedded 29 July 1996 1381 NT 5.0 Windows 2000 Professional, Server, Advanced Server, Datacenter Server, Advanced/Datacenter Server Limited Edition 17 February 2000 2195 NT 5.1 Windows XP Home, Professional, Media Center (original, 2003, 2004 & 2005), Tablet PC (original and 2005), Starter, Embedded , Home N, Professional N 25 October 2001 2600 Windows Fundamentals for Legacy PCs N/A 8 July 2006 NT 5.2 Windows XP 64-bit Edition Version 2003 [19] 28 March 2003 3790 Win