List of Microsoft Windows versions

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This article lists and links to information on the various versions of Microsoft Windows, a major computer operating system developed by Microsoft.

Personal computer versions[edit]

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 Codename Release date Version Editions Build number End of support
Windows 1.01 Interface Manager 1985-11-20 1.01 N/A N/A 2001-12-31
Windows 1.02 N/A 1986-05-14 1.02 N/A N/A 2001-12-31
Windows 1.03 N/A 1986-08-21 1.03 N/A N/A 2001-12-31
Windows 1.04 N/A 1987-04-10 1.04 N/A N/A 2001-12-31
Windows 2.01 N/A 1987-12-09 2.01 N/A N/A 2001-12-31
Windows 2.03 N/A 1987-12-09 2.03 N/A N/A 2001-12-31
Windows 2.1 N/A 1988-05-27 2.10 N/A N/A 2001-12-31
Windows 2.11 N/A 1989-03-13 2.11 N/A N/A 2001-12-31
Windows 3.0 N/A 1990-05-22 3.00
  • Windows 3.0a
  • Windows 3.0 with Multimedia Extensions
N/A 2001-12-31
Windows 3.1 N/A 1992-04-06 3.10
  • Windows 3.1
103 2001-12-31
Sparta[a] 1992-10
  • Windows for Workgroups 3.1
102 2001-12-31
Windows NT 3.1 Razzle[1] 1993-07-27 NT 3.1
  • Windows NT 3.1
528 2000-12-31
Windows 3.11 N/A 1993-11-08 3.11
  • Windows 3.11
Snowball 300 2001-12-31
Windows 3.2 N/A 1993-11-22 3.2
  • Windows 3.2
153 2001-12-31
Windows NT 3.5 Daytona 1994-09-21 NT 3.5
  • Windows NT 3.5 Workstation
807 2001-12-31
Windows NT 3.51 1995-05-30 NT 3.51
  • Windows NT 3.51 Workstation
1057 2001-12-31
Windows 95 Chicago 1995-08-24 4.00
  • Windows 95
950 2001-12-31
Windows NT 4.0 Shell Update Release 1996-08-24 NT 4.0
  • Windows NT 4.0 Workstation
1381 2004-06-30
Windows 98 Memphis[b] 1998-06-25 4.10
  • Windows 98
1998 2006-07-11
Windows 98 Second Edition 1999-05-05
  • Windows 98 Second Edition
2222 2006-07-11
Windows 2000 Windows NT 5.0 2000-02-17 NT 5.0
  • Windows 2000 Professional
2195 2010-07-13
Windows Me Millennium 2000-09-14 4.90
  • Windows Me
3000 2006-07-11
Windows XP Whistler 2001-10-25 NT 5.1 2600 2014-04-08
Freestyle 2002-10-29
Harmony 2003-09-30
Symphony 2004-10-12
Anvil 2005-04-25 NT 5.2 3790
Emerald 2005-10-14 2715
Windows Vista Longhorn[3] 2007-01-30 NT 6.0 6002[c] 2017-04-11
Windows 7 Windows 7[4] 2009-10-22 NT 6.1 7601[d] 2020-01-14
Windows 8 Windows 8 2012-10-26 NT 6.2 9200 2016-01-12
Windows 8.1 Blue 2013-10-17 NT 6.3
  • Windows 8.1
  • Windows 8.1 Pro
  • Windows 8.1 Enterprise
9600 2023-01-10
2014-05-23[e]
Windows 10 version 1507 Threshold 1 2015-07-29 NT 10.0[f][g] 10240 2017-05-09
2025-10-14
Windows 10 version 1511 Threshold 2 2015-11-10 1511
  • Windows 10 Home
  • Windows 10 Pro
10586 2017-10-10
  • Windows 10 Enterprise
  • Windows 10 Education
2018-04-10
Windows 10 version 1607 Redstone 1 2016-08-02 1607
  • Windows 10 Home
  • Windows 10 Pro
  • Windows 10 Pro Education
14393 2018-04-10[i]
  • Windows 10 Enterprise
  • Windows 10 Education
2019-04-09[i]
  • Windows 10 Enterprise LTSB[h]
2026-10-13
Windows 10 version 1703 Redstone 2[5] 2017-04-05 1703
  • Windows 10 Home
  • Windows 10 Pro
  • Windows 10 Pro Education
15063 2018-10-09
  • Windows 10 Enterprise
  • Windows 10 Education
2019-10-08
2017-05-02[e][6]
  • Windows 10 S
2018-10-09
Windows 10 version 1709 Redstone 3[7] 2017-10-17 1709
  • Windows 10 Home
  • Windows 10 Pro
  • Windows 10 Pro for Workstations
  • Windows 10 Pro Education
  • Windows 10 S
16299 2019-04-09
  • Windows 10 Enterprise
  • Windows 10 Education
2020-10-13
Windows 10 version 1803 Redstone 4 2018-04-30 1803
  • Windows 10 Home
  • Windows 10 Pro
  • Windows 10 Pro for Workstations
  • Windows 10 Pro Education
17134 2019-11-12
  • Windows 10 Enterprise
  • Windows 10 Education
2021-05-11
Windows 10 version 1809 Redstone 5[8] 2018-11-13 1809
  • Windows 10 Home
  • Windows 10 Pro
  • Windows 10 Pro for Workstations
  • Windows 10 Pro Education
17763 2020-11-10
  • Windows 10 Enterprise
  • Windows 10 Education
2021-05-11
  • Windows 10 Enterprise LTSC
2029-01-09
Windows 10 version 1903 19H1[9] 2019-05-21 1903
  • Windows 10 Home
  • Windows 10 Pro
  • Windows 10 Pro for Workstations
  • Windows 10 Pro Education
  • Windows 10 Enterprise
  • Windows 10 Education
18362 2020-12-08
Windows 10 version 1909 Vanadium[10][11] 2019-11-12 1909 18363 2021-05-11[j]
Windows 10 version 2004 Vibranium[12][13][k] 2020-05-27 2004 19041 2021-12-14
Windows 10 version 20H2 2020-10-20 20H2 19042 2022-05-10[l]
Windows 10 version 21H1 2021-05-18 21H1 19043 2022-12-13
Windows 10 version 21H2 Late 2021 (expected) 21H2 19044 TBA
  • Windows 10 Enterprise LTSC
TBA
Windows 11 Sun Valley[m] 2021-10-05 TBA 22000 TBA

Mobile versions[edit]

Mobile versions refer to versions of Windows that can run on smartphones or personal digital assistants.

Pocket PC 2000 logo
Windows Phone 7 logo
Windows Phone 8 logo
Windows Phone 8.1 logo
Windows 10 Mobile logo (same as Windows 10 logo)
Name Codename Release
date
Pocket PC 2000 Rapier 2000-04-19
Pocket PC 2002 Merlin 2001-10-04
Windows Mobile 2003 Ozone 2003-06-23
Windows Mobile 2003 SE 2004-03-24
Windows Mobile 5.0 Magneto
Windows Mobile 6.0 Crossbow
Windows Mobile 6.1
Windows Mobile 6.5
Windows Phone 7 2010-10-29
Windows Phone 7.5 Mango 2011-09-27
Windows Phone 7.8 2013-02-01
Windows Phone 8 Apollo 2012-10-29
Windows Phone 8.1 Blue 2014-04-14
Windows 10 Mobile, version 1511 Threshold 2 2015-11-12
Windows 10 Mobile, version 1607 Redstone 1 2016-08-16
Windows 10 Mobile, version 1703 Redstone 2 2017-04-24
Windows 10 Mobile, version 1709 feature2 2017-10-24

Server versions[edit]

Name Release date Version number Editions Latest build End of support
Windows NT 3.1 1993-07-27 NT 3.1
  • Windows NT 3.1
528 2000-12-31
Windows NT 3.5 1994-09-20 NT 3.5
  • Windows NT 3.5 Server
807 2001-12-31
Windows NT 3.51 1995-05-29 NT 3.51
  • Windows NT 3.51 Server
1057 2001-12-31
Windows NT 4.0 1996-07-29 NT 4.0
  • Windows NT 4.0 Server
  • Windows NT 4.0 Server Enterprise
  • Windows NT 4.0 Terminal Server Edition
1381 2004-12-31
Windows 2000 2000-02-17 NT 5.0
  • Windows 2000 Server
  • Windows 2000 Advanced Server
  • Windows 2000 Datacenter Server
2195 2010-07-13
Windows Server 2003 2003-04-24 NT 5.2
  • Windows Small Business Server 2003
  • Windows Server 2003 Web
  • Windows Server 2003 Standard
  • Windows Server 2003 Enterprise
  • Windows Server 2003 Datacenter
  • Windows Storage Server
3790 2015-07-14
Windows Server 2003 R2 2005-12-06 NT 5.2
  • Windows Small Business Server 2003 R2
  • Windows Server 2003 R2 Web Edition
  • Windows Server 2003 R2 Standard Edition
  • Windows Server 2003 R2 Enterprise Edition
  • Windows Server 2003 R2 Datacenter Edition
  • Windows Compute Cluster Server 2003 (CCS)
  • Windows Storage Server
  • Windows Home Server
3790 2015-07-14
Windows Server 2008 2008-02-27 NT 6.0 6003 2020-01-14
Windows Server 2008 R2 2009-10-22 NT 6.1 7601 2020-01-14
Windows Server 2012 2012-09-04 NT 6.2
  • Windows Server 2012 Foundation
  • Windows Server 2012 Essentials
  • Windows Server 2012 Standard
  • Windows Server 2012 Datacenter
  • Windows MultiPoint Server 2012
9200 2013-10-10
Windows Server 2012 R2 2013-10-17 NT 6.3
  • Windows Server 2012 R2 Foundation
  • Windows Server 2012 R2 Essentials
  • Windows Server 2012 R2 Standard
  • Windows Server 2012 R2 Datacenter
9600 2013-10-10
Windows Server 2016 2016-10-12 1607[15]
  • Windows Server 2016 Essentials
  • Windows Server 2016 Standard
  • Windows Server 2016 Datacenter
14393 2017-01-12
Windows Server, version 1809[15] 2018-11-13 1809 17763 2020-11-10
Windows Server 2019 2018-11-13 1809
  • Windows Server 2019 Essentials
  • Windows Server 2019 Standard
  • Windows Server 2019 Datacenter
17763 2019-01-09
Windows Server, version 1903[15] 2019-05-21 1903
  • Windows Server Standard (Core Only)
  • Windows Server Datacenter (Core Only)
18362 2020-12-08[15]
Windows Server, version 1909[15] 2019-11-12 1909
  • Windows Server Standard (Core Only)
  • Windows Server Datacenter (Core Only)
18363 2021-05-11[15]
Windows Server, version 2004[16] 2020-06-26 2004
  • Windows Server Standard (Core Only)
  • Windows Server Datacenter (Core Only)
19041 2021-12-14[15]
Windows Server, version 20H2[17] 2020-10-20 20H2
  • Windows Server Standard (Core Only)
  • Windows Server Datacenter (Core Only)
19042 2022-05-10[15]
Windows Server 2022 2021-08-18 21H2
  • Windows Server Standard
  • Windows Server Datacenter
  • Windows Server Datacenter for Azure (cloud only)
20348 2026-10-13[15]

Device versions[edit]

ARM-based tablets[edit]

Windows RT logo
The Surface RT (shown with keyboard cover attached) was the flagship Windows RT device upon its release.

In 2012 and 2013, Microsoft released versions of Windows specially designed to run on ARM-based tablets; these versions of Windows were based on Windows 8 and Windows 8.1, respectively. (The standard versions of Windows 8 and 8.1 could run on x86-based tablets without modification.) Upon the release of Windows 10 in 2015, the ARM-specific version for large tablets was discontinued; large tablets (such as the Surface Pro 4) were only released with x86 processors and could run the full version of Windows 10. Windows 10 Mobile had the ability to be installed on smaller tablets (up to eight inches); however, very few such tablets were released, and Windows 10 Mobile mainly ended up only running on smartphones until its discontinuation. In 2017, the full version of Windows 10 gained the ability to run on ARM, rendering a specific version of Windows for ARM-based tablets unnecessary.

Name Release date Version number Build number Based on
Windows RT 2012-10-26 NT 6.2 9200 Windows 8
Windows RT 8.1 2013-10-18 NT 6.3 9600 Windows 8.1

Mixed reality and virtual reality headsets[edit]

Name Build number
Windows 10 Holographic, version 1607[18]
Windows 10 Holographic, version 1803[19]
Windows 10 Holographic, version 1809[20]
Windows Holographic, version 1903[21] 18362
Windows Holographic, version 2004[22] 19041
Windows Holographic, version 20H2[23] 19041
Windows Holographic, version 21H1[24] 20348

Surface Hub[edit]

Name Build number
Windows 10 Team, version 1511[25] 10586
Windows 10 Team, version 1607[26] 14393
Windows 10 Team, version 1703[27] 15063
Windows 10 Team, version 20H2[28] 19042

Windows XP-based tablets[edit]

Two versions of Windows XP were released that were optimized for tablets. Beginning with Windows Vista, all tablet-specific components were included in the main version of the operating system.

Name Codename Release date Version number Build number Based on
Windows XP Tablet PC Edition 2002-11-07 NT 5.1 2600 Windows XP
Windows XP Tablet PC Edition 2005 Lonestar 2004-08 NT 5.1 2600 Windows XP

Embedded devices[edit]

Cancelled versions[edit]

Cancelled personal computer versions[edit]

Codename Intended name Discontinuation Version Latest known build number Notes
Cairo 1996 NT 4.0 1175 Originally announced in 1991
Nashville[n] Windows 96 4.1 999 Planned to be released between Windows 95 and Windows 98
Neptune Early 2000 NT 5.50 5111 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.[29] The teams working on Neptune and Odyssey combined to work on Windows XP.
Odyssey Early 2000 NT 6.0[30] Planned to be the successor of Windows 2000. The teams working on Neptune and Odyssey combined to work on Windows XP.
Triton Planned to be the successor of Windows Neptune and had been scheduled to be released in March 2001
Blackcomb Early 2006 Blackcomb was originally planned to be the successor of Windows XP. However, due to the large feature scope planned for Blackcomb, a smaller release codenamed "Longhorn" was planned first, and Blackcomb was delayed to 2003/2004. Both projects faced delays, but Blackcomb was still intended to be Longhorn's successor until the Blackcomb project was renamed Vienna in early 2006. Longhorn would go on to be released to consumers as "Windows Vista" in January 2007.
Vienna July 2007[o] Vienna replaced Blackcomb and was intended as Windows Vista's successor. Vienna was eventually cancelled in favor of a new project codenamed "Windows 7" (which went on to be released in 2009 with the same name)
Polaris 2018 16299 Cancelled in favor of Santorini
Santorini[p] Windows 10X May 18, 2021 (cancellation announcement)[32] 21H1 20279 Microsoft had been reported as working on a new "lite" version of Windows as early as December 2018.[33] Such a version was officially announced under the name "Windows 10X" at an event in October 2019; the operating system was intended to first launch on dual-screen devices. In May 2020, Microsoft announced that Windows 10X would instead be launching on single-screen PCs, such as laptops and 2-in-1 devices, first.[34] However, on May 18, 2021, Microsoft announced that Windows 10X would not be launching (at least not in 2021); many of its features were rolled into Windows 11 instead.

Cancelled mobile versions[edit]

Codename Intended name Discontinuation Notes
Photon Windows Mobile 7 September 2008[35] Originally a successor of Windows Mobile, it had been scrapped for Windows Phone 7[36][37]
Phoenix[38] Cancelled when Microsoft "winded down" its phone efforts
Andromeda[39] Mid-2018 Much of the work that was put into Andromeda was migrated into Santorini. The Surface Duo, a dual-screen Android-powered smartphone launched by Microsoft in 2020, was loosely based on the prototype hardware that had been used to test Andromeda.

See also[edit]

Notes[edit]

  1. ^ Originally codenamed Winball.
  2. ^ Has also been called ChiCairo and London.[2]
  3. ^ Windows Vista originally had the build number 6000 when it was originally released; the build number was increased by one with each of the two subsequent Service Packs.
  4. ^ Windows 7 originally had the build number 7600 when it was released in 2009; the build number was increased to 7601 with the release of Service Pack 1 in 2011.
  5. ^ a b Announcement date
  6. ^ Early preview builds of Windows 10 had the version number NT 6.4.
  7. ^ Retroactively referred to as version 1507
  8. ^ a b Retroactively renamed to Windows 10 Enterprise LTSC
  9. ^ a b January 10, 2023 for Intel Clover Trail based systems
  10. ^ May 10, 2022 for enterprise and education editions
  11. ^ Vibranium was the codename for Windows 10 version 2004 (build 19041). During the 20H2, 21H1, and 21H2 development cycles, builds were compiled under the codenames Manganese, Iron, and Cobalt, respectively. However, the versions of 20H2 and 21H1 that were released were built on top of version 2004 instead of these new builds. Windows 10 version 21H2 was similarly built on top of the Vibranium/2004 codebase instead of the Cobalt codebase; Cobalt builds were instead used as the base for Windows 11 (which had a core based on Cobalt in addition to a UI codenamed Sun Valley, and which also carries the version 21H2).
  12. ^ May 9, 2023 for enterprise and education editions
  13. ^ The core of Windows 11 is codenamed Cobalt;[14] the "Sun Valley" codename refers to the UI layer of Windows 11 and is commonly used to address Windows 11 as a whole.
  14. ^ Nashville was originally codenamed Cleveland.
  15. ^ July 2007 is when it was reported that the Vista's successor was codenamed "7," rather than "Vienna," indicating that Vienna's discontinuation had occurred by then. However, Vienna may have been cancelled prior to then.
  16. ^ While Santorini was the general codename for Windows 10X, Centaurus was the specific codename for Windows 10X on foldable PCs and Pegasus was the codename for Windows 10X on "traditional" PCs (such as laptops or 2-in-1 computers).[31]

References[edit]

  1. ^ "Random internal Windows terminology: IDW, Razzle, and their forgotten partners IDS and Dazzle". The Old New Thing. December 24, 2018. Retrieved April 9, 2020.
  2. ^ "Systems Release Strategy - Draft: 10/10/93" (PDF). Slated Antitrust. November 10, 1993.
  3. ^ Martens, China (July 22, 2005). "Update: Microsoft's Longhorn becomes Windows Vista". IDG Communications, Inc. Retrieved June 13, 2021. Microsoft Corp. has announced the official name for its upcoming operating system, previously known under the code name Longhorn. The operating system, now due out in 2006, will be called Windows Vista
  4. ^ "What was the code name for Windows 7?". The Old New Thing. July 22, 2019. Retrieved May 9, 2021.
  5. ^ Bowden, Zac (August 4, 2016). "Microsoft confirms two major updates planned for Windows 10 in 2017". Windows Central. Future US, Inc. Retrieved June 13, 2021. Windows Central understands that the first major update for 2017 (codenamed Redstone 2) will release in the early part of 2017.
  6. ^ Warren, Tom (May 2, 2017). "Windows 10 S is Microsoft's answer to Chrome OS". The Verge. Vox Media, LLC. Retrieved July 24, 2021.
  7. ^ Bowden, Zac (August 4, 2016). "Microsoft confirms two major updates planned for Windows 10 in 2017". Windows Central. Future US, Inc. Retrieved June 13, 2021. The second major update scheduled for 2017 is codenamed "Redstone 3"
  8. ^ Woods, Rich. "Windows 10 Redstone 5 is officially version 1809". Neowin. Neowin LLC. Retrieved June 13, 2021. Redstone 5 is now officially Windows 10 version 1809.
  9. ^ Hassan, Mehedi (October 31, 2018). "Windows 10's Next Major Updates Will Be Codenamed Vanadium, Vibranium". Thurrott. BWW Media Group. Retrieved June 13, 2021. Windows 10’s next major update is codenamed 19H1.
  10. ^ Brown, Matt (October 31, 2018). "Next Windows 10 updates reportedly codenamed 'Vanadium' and 'Vibranium'". Windows Central. Future US, Inc. Retrieved June 13, 2021.
  11. ^ Hassan, Mehedi (October 31, 2018). "Windows 10's Next Major Updates Will Be Codenamed Vanadium, Vibranium". Thurrott. BWW Media Group. Retrieved June 13, 2021. This means the next Windows 10 update, previously codenamed 19H2, will be called Vanadium (comes after Titanium/19H1).
  12. ^ Brown, Matt (October 31, 2018). "Next Windows 10 updates reportedly codenamed 'Vanadium' and 'Vibranium'". Windows Central. Future US, Inc. Retrieved June 13, 2021.
  13. ^ Hassan, Mehedi (October 31, 2018). "Windows 10's Next Major Updates Will Be Codenamed Vanadium, Vibranium". Thurrott. BWW Media Group. Retrieved June 13, 2021.
  14. ^ Parmar, Mayank (September 3, 2021). "Windows 11 Build 22449 is now available with new loading animation". Windows Latest. Retrieved September 4, 2021. Windows 11 version 21H2 (shipping on October 5) = Cobalt (Co).
  15. ^ a b c d e f g h i JasonGerend. "Windows Server release information". docs.microsoft.com. Retrieved September 9, 2020.
  16. ^ JasonGerend. "Windows Server servicing channels". docs.microsoft.com. Retrieved September 9, 2020.
  17. ^ JasonGerend. "Windows Server servicing channels". docs.microsoft.com. Retrieved September 9, 2020.
  18. ^ "HoloLens 1st (gen) release notes". Retrieved July 18, 2021.
  19. ^ "HoloLens 1st (gen) release notes". Retrieved July 18, 2021.
  20. ^ "HoloLens 1st (gen) release notes". Retrieved July 18, 2021.
  21. ^ "HoloLens 2 release notes". Retrieved July 18, 2021.
  22. ^ "HoloLens 2 release notes". Retrieved July 18, 2021.
  23. ^ "HoloLens 2 release notes". Retrieved July 18, 2021.
  24. ^ "HoloLens 2 release notes". Retrieved July 18, 2021.
  25. ^ "Surface Hub update history". Retrieved July 18, 2021.
  26. ^ "Surface Hub update history". Retrieved July 18, 2021.
  27. ^ "Surface Hub update history". Retrieved July 18, 2021.
  28. ^ "Surface Hub update history". Retrieved July 18, 2021.
  29. ^ "Microsoft combines Neptune, Odyssey into Whistler". CNN. January 27, 2000. Archived from the original on September 1, 2008. Retrieved January 6, 2010.
  30. ^ "Windows Odyssey". Retrieved July 16, 2021. Knowing that Neptune is 5.50, it's only logical to conclude Odyssey was to be 6.0
  31. ^ Bowden, Zac (October 30, 2019). "Windows Core OS: The complete guide". Windows Central. Future US, Inc. Retrieved June 14, 2021.
  32. ^ Warren, Tom (May 18, 2021). "Microsoft confirms Windows 10X is dead". The Verge. Vox Media, LLC. Retrieved June 14, 2021.
  33. ^ Sams, Brad (December 3, 2018). "What is Windows Lite? It's Microsoft's Chrome OS Killer". Petri. BWW Media Group. Retrieved July 16, 2021.
  34. ^ Bowden, Zac (May 4, 2020). "Windows 10X will now launch first on single-screen PCs". Windows Central. Future US, Inc. Retrieved July 16, 2021.
  35. ^ Litvinenko, Yuri. "Microsoft's Project Photon: A Stunted Effort to Rebuild Windows Mobile". Retrieved July 16, 2021. Checking reports against each other provides the grounds to assume Microsoft kept working on Photon till September 2008.
  36. ^ "Windows Mobile 7 vs Windows Phone 7". Popular Pages at brighthub.com. May 20, 2011. Retrieved December 15, 2016.
  37. ^ "Revealed: Original Windows Mobile 7 UI". neowin.net. February 20, 2010. Retrieved December 15, 2016.
  38. ^ Bowden, Zac (September 18, 2020). "Project Andromeda: The secret history of Windows on Surface Duo". Windows Central. Future US, Inc. Retrieved July 16, 2021. Microsoft had originally planned to ship CShell on Windows 10 Mobile under the codename Pheonix [sic], but that plan very quickly went away once the company decided to wind down its existing phone efforts in early 2017.
  39. ^ Bowden, Zac (September 18, 2020). "Project Andromeda: The secret history of Windows on Surface Duo". Windows Central. Future US, Inc. Retrieved July 16, 2021.