The term Windows NT was used to distinguish Microsoft's line of business-orientated operating systems from their consumer-orientated versions. The numbering system effectively started from Windows for Workgroups 3.1 , with the first Windows NT release being Windows NT 3.1 . Windows NT 3.5 , Windows NT 3.51 and Windows NT 4.0 would be the only other operating system releases to bear the Windows NT branding (although the beta for Windows 2000 began as Windows NT 5.0 ).
This is a summary of where Microsoft products ended up on the Windows NT versioning system:
Version
Products
Editions
Release Date
3.1
Windows NT 3.1
Workstation , Server
July 27 , 1993
3.5
Windows NT 3.5
Workstation , Server
September 21 , 1994
3.51
Windows NT 3.51
Workstation , Server
May 30 , 1995
4.0
Windows NT 4.0
Workstation , Server , Server Enterprise Edition , Terminal Server , Embedded
August 24 , 1996
5.0
Windows 2000
Professional , Server , Advanced Server
February 17 , 2000
Datacenter Server
September 26 , 2000
5.1
Windows XP
Home Edition , Professional Edition , Media Center Edition , Media Center Edition 2004 , , Media Center Edition 2005 , Tablet PC Edition , Tablet PC Edition 2005 , Starter Edition , Embedded , Home Edition N , Professional Edition N
October 25 , 2001
Windows Fundamentals for Legacy PCs
July 8 , 2006
5.1
Windows XP
Windows XP 64-bit Edition 2003
March 28 , 2003
Windows Server 2003
Standard Edition , Enterprise Edition , Datacenter Edition , Web Edition , Storage Server , Small Business Server , Compute Cluster Server
April 24 , 2003
Windows XP
Windows XP Professional x64 Edition
April 25 , 2005
Windows Server 2003 R2
Standard Edition , Enterprise Edition , Datacenter Edition , Web Edition , Storage Server , Small Business Server , Compute Cluster Server
December 6 , 2005
Windows Home Server
July 16 , 2007
6.0
Windows Vista
Business Edition , Enterprise Edition
November 30 , 2006
Windows Vista
Starter Edition , Home Basic Edition , Home Premium Edition , Ultimate Edition
January 30 , 2007
Windows Server 2008
Foundation Edition , Standard Edition , Enterprise Edition , Datacenter Edition , Web Server Edition , HPC Server Edition , Itanium-Based Systems
February 27 , 2008
6.1
Windows 7
Starter Edition , Home Basic Edition , Home Premium Edition , Business Edition , Enterprise Edition , Ultimate Edition
October 22 , 2009
Windows Server 2008 R2
Foundation Edition , Standard Edition , Enterprise Edition , Datacenter Edition , Web Server Edition , HPC Server Edition , Itanium-Based Systems
Windows Home Server 2011
April 6 , 2011
Windows Thin PC
June 6 , 2011
6.2
Windows 8
Windows 8, Windows 8 Pro , Windows 8 Enterprise , Windows RT
October 26 , 2012
Windows Server 2012
Foundation Edition , Essentials Edition , Standard Edition , Datacenter Edition
September 4 , 2012
6.3
Windows 8.1
Windows 8.1, Windows 8.1 Pro , Windows 8.1 Enterprise , Windows RT 8.1
October 18 , 2013
Windows Server 2012 R2
Foundation Edition , Essentials Edition , Standard Edition , Datacenter Edition
10.0
Windows 10
Home Single Language , Home , Pro , Pro Education , Pro for Workstations , Enterprise , Education , S , IoT Core , Mobile , Mobile Enterprise
July 29 , 2015
Windows Server 2016
Essentials , Standard , Datacenter , Multipoint Premium Server , Storage Server , Hyper-V Server
September 26 , 2016
Windows Server 2019
Essentials , Standard , Datacenter , Multipoint Premium Server , Hyper-V Server
October 2 , 2018
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