List of Windows operating systems

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Personal computer versions

In this section, a client version of Windows is a version that end-users or OEMs can install on personal computers, including desktop computers, laptops and workstations.

Name Version Release date Codename Additional information Editions Latest build Unsupported as of
Windows 1.0x
Windows 1.01 1.01 November 20, 1985 Interface Manager First public release of Windows N/A N/A December 31, 2001
Windows 1.02 1.02 May 14, 1986
Windows 1.03 1.03 August 21, 1986
Windows 1.04 1.04 April 10, 1987
Windows 2.0x
Windows 2.01 2.01 December 9, 1987
  • Windows/286
  • Windows/386
N/A December 31, 2001
Windows 2.03 2.03
Windows 2.1x
Windows 2.1 2.1 May 27, 1988
  • Windows/286
  • Windows/386
N/A December 31, 2001
Windows 2.11 2.11 March 13, 1989
Windows 3.0x
Windows 3.00 3.00 May 22, 1990 N/A N/A December 31, 2001
Windows 3.00a MME 3.00a October 20, 1991 Sometimes called Windows Graphical Environment with Multimedia Extensions 1.0
Windows 3.1x
Windows 3.1 3.1 April 6, 1992 Janus N/A 103 December 31, 2001
Windows for Workgroups 3.1 3.1 October 1992 Kato, Sparta
Windows 3.11 3.11 November 8, 1993 300
Windows for Workgroups 3.11 3.11 August 11, 1993 Snowball
Windows 3.2 3.2 November 22, 1993 Chinese version of Windows 3.1x 153
Windows 9x
Windows 95 4.0 August 24, 1995 Chicago
  • Windows 95
  • Windows 95 Service Pack 1/OEM Service Release 1 (February 14, 1996)
  • Windows 95 OEM Service Release 2 (August 24, 1996)
  • Windows 95 USB Supplement to OEM Service Release 2 (August 27, 1997)
  • Windows 95 OEM Service Release 2.1 (August 27, 1997)
  • Windows 95 OEM Service Release 2.5 (November 26, 1997)
950 December 31, 2001
Cancelled 4.1 N/A Cleveland, Nashville N/A N/A
Windows 98 June 21, 1998 Memphis N/A 1998 July 11, 2006
Windows 98 Second Edition April 23, 1999 N/A 2222A
Windows Me 4.9 September 14, 2000 Millennium N/A 3000
Windows NT
Windows NT 3.1 NT 3.1 July 27, 1993 Razzle
  • Windows NT 3.1 Workstation
528 (SP3) December 31, 2001
Windows NT 3.5 NT 3.5 September 21, 1994 Daytona
  • Windows NT 3.5 Workstation
807
Windows NT 3.51 NT 3.51 May 30, 1995
  • Windows NT 3.51 Workstation
1057.6 (SP5)
Windows NT 4.0 NT 4.0 August 24, 1996 Shell Update Release
  • Windows NT 4.0 Workstation
1381.7097 (SP6a) December 3, 2004
Windows 2000 NT 5.0 February 17, 2000
  • Windows 2000 Professional
2195.7397 (SP4) July 13, 2010
Windows XP NT 5.1 October 25, 2001 Whistler
  • Windows XP Starter Edition
  • Windows XP Home Edition
  • Windows XP Professional
  • Windows Fundamentals for Legacy PCs (July 8, 2006)
2600.7259 (SP3) April 8, 2014
Windows XP Professional x64 Edition NT 5.2 April 25, 2005 N/A 3790.3959 (SP2) April 8, 2014
Windows Vista NT 6.0 January 30, 2007 Longhorn
  • Windows Vista Starter
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Ultimate
6003 (SP2) April 11, 2017
Windows 7 NT 6.1 October 22, 2009 Seven
  • Windows 7 Starter
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Enterprise
  • Windows 7 Ultimate
  • Windows Thin PC
7601 (SP1) January 14, 2020
Windows 8 NT 6.2 October 26, 2012 Eight
  • Windows 8
  • Windows 8 Pro
  • Windows 8 Enterprise
9200 January 10, 2023
Windows 8.1 NT 6.3 October 17, 2013 Blue
  • Windows 8.1
  • Windows 8.1 Pro
  • Windows 8.1 Enterprise
  • Windows 8.1 with Bing
9600.16384
Windows 10 NT 10.0 July 29, 2015 (1507)
November 10, 2015 (1511)
August 2, 2016 (1607)
April 5, 2017 (1703)
October 17, 2017 (1709)
April 30, 2018 (1803)
November 13, 2018 (1809)
May 21, 2019 (1903)
November 12, 2019 (1909)
May 27, 2020 (2004)
Threshold (1507)
Threshold 2 (1511)
Redstone (1607)
Redstone 2 (1709)
Redstone 3 (1709)
Redstone 4 (1803)
Redstone 5 (1809)
19H1 (1903)
19H2 (1909)
20H1 (2004)
20H2 (20H2)
21H1 (21H1)
  • Windows 10 Home
  • Windows 10 Pro
  • Windows 10 Pro Education
  • Windows 10 Pro for Workstations
  • Windows 10 Enterprise
  • Windows 10 Enterprise LTSC (formerly LTSB)
  • Windows 10 Education
  • Windows 10 IoT Core
  • Windows 10 IoT Enterprise
  • Windows 10 S (now an operational mode within Enterprise and Education)
10240 (1507)
10586 (1511)
14393 (1607)
15063 (1703)
16299 (1709)
17134 (1803)
17763 (1809)
18362.116 (1903)
18363.418 (1909)
19041.208 (2004)
October 14, 2025

Server versions

Name Version Release date Codename Additional information Editions Latest build Unsupported as of
Windows NT 3.1 NT 3.1 July 27, 1993 Razzle NT version of Windows 3.1
  • Windows NT 3.1 Advanced Server
528 (SP3) December 31, 2001
Windows NT 3.5 NT 3.5 September 20, 1994 Daytona
  • Windows NT 3.5 Server
807
Windows NT 3.51 NT 3.51 May 29, 1995
  • Windows NT 3.51 Server
1057.6 (SP5)
Windows NT 4.0 NT 4.0 July 29, 1996 Shell Update Release
  • Windows NT 4.0 Server
  • Windows NT 4.0 Enterprise Server
  • Windows NT 4.0 Terminal Server
1381.7097 (SP6a) December 3, 2004
Windows 2000 Server NT 5.0 February 17, 2000
  • Windows 2000 Advanced Server
  • Windows 2000 Datacenter Server
2195.7397 (SP4) July 13, 2010
Windows Server 2003 NT 5.2 April 24, 2003 Whistler Server
  • Windows Standard Server 2003
  • Windows Enterprise Server 2003
  • Windows Datacenter Server 2003
  • Windows Web Server 2003
  • Windows Storage Server 2003
  • Windows Small Business Server 2003
3790.3959 (SP2) July 14, 2015
Windows Server 2003 R2 NT 5.2 December 6, 2005 An updated version of Windows Server 2003.
  • Windows Standard Server 2003 R2
  • Windows Enterprise Server 2003 R2
  • Windows Datacenter Server 2003 R2
  • Windows Web Server 2003 R2
  • Windows Storage Server 2003 R2
  • Windows Small Business Server 2003 R2
  • Windows Compute Cluster Server 2003
3790.2075
Windows Server 2008 NT 6.0 December 12, 2008 Longhorn Server A server counterpart of Windows Vista.
  • Windows Standard Server 2008
  • Windows Enterprise Server 2008
  • Windows Datacenter Server 2008
  • Windows Server 2008 for Itanium-based Systems
  • Windows Foundation Server 2008
  • Windows Essential Business Server 2008
  • Windows HPC Server 2008
  • Windows Small Business Server 2008
  • Windows Storage Server 2008
  • Windows Web Server 2008
6003 (SP2) January 14, 2020
Windows Server 2008 R2 NT 6.1 October 22, 2009 Server 7
  • Windows Foundation Server 2008 R2
  • Windows Standard Server 2008 R2
  • Windows Enterprise Server 2008 R2
  • Windows Datacenter Server 2008 R2
  • Windows Server 2008 R2 for Itanium-based Systems
  • Windows Web Server 2008 R2
  • Windows Storage Server 2008 R2
  • Windows HPC Server 2008 R2
  • Windows Small Business Server 2010
  • Windows Home Server 2010
  • Windows MultiPoint Server 2010
7601 (SP1)
Windows Server 2012 NT 6.2 September 4, 2012 Server 8
  • Windows Foundation Server 2012
  • Windows Essentials Server 2012
  • Windows Standard Server 2012
  • Windows Datacenter Server 2012
  • Windows MultiPoint Server 2012
9200 October 10, 2023
Windows Server 2012 R2 October 17, 2013 Server Blue
  • Windows Foundation Server 2012 R2
  • Windows Essentials Server 2012 R2
  • Windows Standard Server 2012 R2
  • Windows Datacenter Server 2012 R2
  • Windows MultiPoint Server 2012 R2
9600.16384
Windows Server 2016 NT 10.0 October 12, 2016 Threshold Server
  • Windows Essentials Server 2016
  • Windows Standard Server 2016
  • Windows Datacenter Server 2016
14393 January 12, 2027
Windows Server 2019 November 13, 2018 Redstone 5 Server
  • Windows Essentials Server 2019
  • Windows Standard Server 2019
  • Windows Datacenter Server 2019
17763 January 9, 2029

Device versions

Appliances

Name Version Release date Codename An edition of Additional information Sold with
Windows XP Media Center Edition NT 5.1 2002, 2003, 2004, 2005, and 2006 eHome (2002)
Freestyle (2003)
Harmony (2004)
Symphony (2005)
Emerald (2006)
Windows XP Home theater PCs, network attached storage (NAS) and set-top boxes
Windows XP Tablet PC Edition November 2002, 2003, 2004, and 2005 Mira (2002)
Lonestar (2005)
Microsoft Tablet PC
Windows RT NT 6.2 October 26, 2012 Windows on ARM Windows 8 ARM-based tablet computers
Windows RT 8.1 NT 6.3 October 18, 2013 RT Blue Windows 8.1

Mobile devices

Mobile devices include smartphones, handheld tablet computers, and personal digital assistants

  • Windows 10
    • Windows 10 Mobile
    • Windows 10 Mobile Enterprise
    • Windows 10 IoT Mobile
    • Windows 10 IoT Mobile Enterprise
  • Windows Phone
    • Windows Phone 8.1
    • Windows Phone 8
    • Windows Phone 7.8
    • Windows Phone 7.5
    • Windows Phone 7
  • Windows Mobile
    • Windows Mobile 6.5
    • Windows Mobile 6.1
    • Windows Mobile 6.0
    • Windows Mobile 5.0
    • Windows Mobile 2003 Second Edition
    • Windows Mobile 2003
    • Pocket PC 2002
    • Pocket PC 2000

Embedded devices

  • Windows Embedded
    • Windows Embedded 8.1
    • Windows Embedded 8
    • Windows Embedded 7
    • Windows Embedded Automotive
    • Windows Embedded Industry
    • Windows Embedded 2009
    • Windows XP Embedded
    • Windows NT 4.0 Embedded – Abbreviated NTe, it is an edition of Windows NT 4.0 that was aimed at computer-powered major appliances, vending machines, ATMs and other devices that cannot be considered computers per se. It is the same system as the standard Windows NT 4.0, but it comes packaged in a database of components and dependencies, from which a developer can choose individual components to build customized setup CDs and hard disk boot images. Windows NT 4.0 Embedded includes Service Pack 5.
  • Windows Embedded Compact
    • Windows Embedded Compact 2013
    • Windows Embedded Compact 7
    • Windows Embedded CE 6.0 (2006)
    • Windows CE 5.0 (2005), with a version for smartphones and PDAs sold as Windows Mobile 5.0
    • Windows CE 4.2 (2004), with a version for smartphones and PDAs sold as Windows Mobile 2003 SE
    • Windows CE 4.1 (2003), with a version for smartphones and PDAs sold as Windows Mobile 2003
    • Windows CE 4.0 (2002), with a version for smartphones and PDAs sold as Pocket PC 2002
    • Windows CE 3.0 (June 2000), with a version for smartphones and PDAs sold as Pocket PC 2000
    • Windows CE 2.12 (August 1999)
    • Windows CE 2.11 (October 1998)
    • Windows CE 2.1 (July 1998)
    • Windows CE 2.0 (September 1997)
    • Windows CE 1.0 (November 1996)

Dual screen devices

  • Windows 10X

Cancelled versions

  • Windows Mobile 7 or Photon - originally a successor of Windows Mobile, it had been scrapped for Windows Phone 7 with Metro UI.
  • Microsoft Neptune (December 27, 1999) – the first planned version of Microsoft Windows NT to have a consumer edition variant, based on the Windows 2000 codebase. A version was sent out to testers but was never released.
  • Microsoft Cairo (February 29, 1996) – a "true object-oriented OS", planned after Windows NT 4.0.
  • Microsoft Midori (2003) – codename for a managed code operating system.