Windows operating systems: Difference between revisions

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(Created page with "==Personal computer Windows versions== Windows and Windows Server is an series that developed by Microsoft. 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. {| border="1" cellpadding="4" cellspacing="0" style="margin: 0.5em 1em 0.5em 0; background: #f9f9f9; border: 1px #aaa solid; border-collapse: collapse; font-size: 95%" |- style="background: #ecece...")
 
 
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==Cancelled versions==
==Cancelled versions==
*Windows 10X or ''Santorini'' - originally a successor of Windows 10, it had been scrapped for Windows 10X and replaced/integrated by Windows 11 released on 2021.
*Windows Mobile 7 or ''Photon'' - originally a successor of Windows Mobile, it had been scrapped for Windows Phone 7 with Metro UI.
*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 ''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.

Latest revision as of 15:22, 10 July 2024

Personal computer Windows versions[edit | edit source]

Windows and Windows Server is an series that developed by Microsoft. 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 1.00 1.00 November 6, 1985 Interface Manager First release of Windows
First public release of Windows
  • Windows/286
  • Windows/386
 N/A December 31, 2001
Windows 1.01 1.01 November 20, 1985 First international release of Windows
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 1.05 1.05 1987 An updated Chinese version of Windows 1.04
Windows 2.0x
Windows 2.00 2.00 December 9, 1987 Presentation Manager They doesn't work with Intel 80486 processors
  • Windows/286
  • Windows/386
 N/A December 31, 2001
Windows 2.01 2.01
Windows 2.02 2.02
Windows 2.03 2.03
Windows 2.04 2.04 January 1988 An updated Chinese version of Windows 2.03
Windows 2.1x
Windows 2.1 2.1 May 27, 1988 This is the first OS that works with Intel 486
  • Windows/286
  • Windows/386
  • Windows/486
 N/A December 31, 2001
Windows 2.11 2.11 March 13, 1989
Windows 2.2 2.2 1990 A Chinese version of Windows 2.1
Windows 2.21 2.21 An updated version of Windows 2.2 or a Chinese version of Windows 2.11
Windows 3.0x
Windows 3.00 3.00 May 22, 1990 Like Windows 2.1x, Windows 3.0x does work with Intel 80486 processors N/A N/A December 31, 2001
Windows 3.01 3.01 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 Janus 300
Windows for Workgroups 3.11 3.11 August 11, 1993 Snowball
Windows 3.2 3.2 November 22, 1993 Janus Chinese version of Windows 3.1x 153
Windows for Workgroups 3.2 3.2 December 1993 Cougar Chinese version of Windows for Workgroups 3.1x
Windows 9x
Windows 94 4.0 June 10, 1994 Project 9x A beta version of Windows 95. 122 December 31, 2001
Windows 95 4.0 August 24, 1995 Chicago
  • Windows 95
  • Windows 95 Service Pack 1 (December 31, 1995)
  • Windows 95 Service Pack 1.1 (February 14, 1996)
  • Windows 95 Service Pack 2 (August 24, 1996)
  • Windows 95 USB Supplement to Service Pack 2 (August 27, 1997)
  • Windows 95 Service Pack 2.1 (August 27, 1997)
  • Windows 95 Service Pack 2.5 (November 26, 1997)
 950
Windows 96 4.1 May 3, 1996 Cleveland, Nashville
  • Windows 96
  • Windows 96 Service Pack 1 (1997)
 1265 (RTM), 1326 (SP1)
Windows 97 June 24, 1997 ChiCairo N/A 1538 December 31, 2004
Windows 98 4.2 June 21, 1998 Memphis In winver, it incorrectly says 4.10, like Windows 96. N/A 1998 July 11, 2006
Windows 99 April 23, 1999 Dolly Also known as Windows 98 Second Edition. N/A 2222A
Windows Me 4.99 September 14, 2000 Millennium N/A 3000
Windows NT
Windows NT 3.1 NT 3.1 July 27, 1993 AXP NT version of Windows 3.1
  • Windows NT 3.1 Workstation
 511 (SP1) December 31, 2001
Windows NT for Workgroups 3.1 Razzle NT version of Windows for Workgroups 3.1 N/A 5xx
Windows NT 3.11 NT 3.11 1994 NT OS/2 NT version of Windows 3.11.
  • Windows NT 3.11 Workstation
 528 (SP1)
Windows NT for Workgroups 3.11 1994 Razzle NT version of Windows for Workgroups 3.11. N/A 5xx
Windows NT 3.2 NT 3.2 1994 NT 3.2 NT version of Windows 3.2 or Chinese version of Windows NT 3.11.
  • Windows NT 3.2 Workstation
 5xx
Windows 3.5 NT 3.5 September 21, 1994 Daytona
  • Windows 3.5 Workstation
 807
Windows 3.51 NT 3.51 May 30, 1995
  • Windows 3.51 Workstation
 1057.6 (SP5)
Windows NT 4.0 NT 4.0 August 24, 1996 Shell Update Release, NT 96
  • Windows NT 4.0 Workstation
 1381.7097 (SP7) December 3, 2004
Windows NT 5.0 NT 5.0 February 17, 2000 NT 5.0 The last Windows OS that was branded as "Windows NT".
  • Windows NT 5.0 Workstation
 2195.7397 (SP5) July 13, 2010
Windows 2000 NT 4.9 Memphis
  • Windows 2000 Professional
Windows Whistler NT 5.1 October 24, 2000 Whistler A beta version of Windows XP.
  • Windows Whistler Professional
  • Windows Whistler Personal
 2296 2013
Windows XP NT 5.2 October 25, 2001 Odyssey
  • Windows XP Starter
  • Windows XP Home
  • Windows XP Professional
  • Windows Fundamentals for Legacy PCs (July 8, 2006)
 2600.7259 (SP4) April 8, 2014
Windows 2003 NT 5.3 March 24, 2003 Triton An x64 edition of Windows XP. N/A 3790 July 14, 2015
Windows XP Professional x64 Edition April 25, 2005 Sundown N/A 3790.xxxx (SP3) April 8, 2014
Windows Longhorn NT 6.0 April 25, 2004 (pre-reset)
April 1, 2005 (post-reset) 		Longhorn A beta version of Windows Vista.
  • Windows Longhorn Professional
 4074 (pre-reset)
5048 (post-reset) 		July 14, 2015
Windows Vista NT 6.05 January 30, 2007 Six
  • Windows Vista Starter
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Ultimate
 6003.20597 (SP3) April 11, 2017
Windows Vienna NT 6.1 December 12, 2008 Blackcomb, Vienna A beta version of Windows 7.
  • Windows Vienna Starter
  • Windows Vienna Home Basic
  • Windows Vienna Home Premium
  • Windows Vienna Business
  • Windows Vienna Enterprise
  • Windows Vienna Ultimate
 7000 January 14, 2020
Windows 7 NT 6.2 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
 7600.16905 (Update)
Windows 7.1 February 22, 2011 (as a service pack), August 30, 2011 (as a non-service pack) Developer Preview (as a non-service pack), Vista 2 (as a service pack)
  • Windows 7.1 Starter
  • Windows 7.1 Home Basic
  • Windows 7.1 Home Premium
  • Windows 7.1 Professional
  • Windows 7.1 Enterprise
  • Windows 7.1 Ultimate
  • Windows 7.1 Thin PC
 7601.24387 (Update), 8102.101 (as a non-service pack)
Windows 8 NT 6.3 October 26, 2012 Jupiter, Eight
  • Windows 8
  • Windows 8 Pro
  • Windows 8 Home
  • Windows 8 Enterprise
  • Windows 8 Core
  • Windows 8 OEM
 9200 January 10, 2023
Windows 8.1 October 17, 2013 Blue
  • Windows 8.1
  • Windows 8.1 Pro
  • Windows 8.1 Home
  • Windows 8.1 Enterprise
  • Windows 8.1 Core
  • Windows 8.1 OEM
  • Windows 8.1 with Bing
 9600.16384
Windows 8.11 April 8, 2014 8.1 Update 1 An updated version of Windows 8.1. Windows 8.2 is a Chinese version.
  • Windows 8.11
  • Windows 8.11 Pro
  • Windows 8.11 Home
  • Windows 8.11 Enterprise
  • Windows 8.11 Core
  • Windows 8.11 OEM
  • Windows 8.11 with Bing
 9600.17476 (as Windows 8.11)
9600.31213 (Chinese version)
Windows 9 NT 6.4 September 12, 2014 Technical Preview
  • Windows 9
  • Windows 9 Pro
  • Windows 9 Home
  • Windows 9 Enterprise
  • Windows 9 Core
 9841 2024 or 2025
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) 		Threshold (1507)
Threshold 2 (1511)
Redstone (1607)
Redstone 2 (1709)
Redstone 3 (1709)
Redstone 4 (1803)
Redstone 5 (1809)
19H1 (1903)
19H2 (1909) 		Also known as Windows X
  • 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) 		October 14, 2025
Windows 2020 May 27, 2020 (2004), 2020 (2009), 2021 (21H1) 20H1 (2004), 20H2 (20H2), 21H1 (21H1) A successor to Windows 10 November 2019 Update.
  • Windows 2020 Home
  • Windows 2020 Pro
  • Windows 2020 Pro Education
  • Windows 2020 Pro for Workstations
  • Windows 2020 Enterprise
  • Windows 2020 Enterprise LTSC
  • Windows 2020 Education
  • Windows 2020 IoT Core
  • Windows 2020 IoT Enterprise
  • Windows 2020 S
 19041.208 (2004) 2030?
Windows 11 October 5, 2021 21H2 A succesor to Windows 10. *Windows 11 Home
  • Windows 11 Pro
  • Windows 11 Pro Education
  • Windows 11 Pro for Workstations
  • Windows 11 Enterprise
  • Windows 11 Enterprise LTSC (formerly LTSB)
  • Windows 11 Education
  • Windows 11 IoT Core
  • Windows 11 IoT Enterprise
  • Windows 11 S (now an operational mode within Enterprise and Education)
Windows 2024 June 11, 2024 24H2 A successsor to Windows 11 2024 Update. *Windows 2024 Home
  • Windows 2024 Pro
  • Windows 2024 Pro Education
  • Windows 2024 Pro for Workstations
  • Windows 2024 Enterprise
  • Windows 2024 Enterprise LTSC
  • Windows 2024 Education
  • Windows 2024 IoT Core
  • Windows 2024 IoT Enterprise
  • Windows 2024 S
Windows 12 October 9, 2024 24H2 A successor to Windows 11.

Server versions[edit | edit source]

Name Version Release date Codename Additional information Editions Latest build Unsupported as of
Windows NT 3.1 NT 3.1 July 27, 1993 AXP NT version of Windows 3.1
  • Windows NT 3.1 Server
  • Windows NT 3.1 Advanced Server
 511 (SP1) December 31, 2001
Windows NT 3.11 NT 3.11 1994 NT OS/2 NT version of Windows 3.11
  • Windows NT 3.11 Server
  • Windows NT 3.11 Advanced Server
 528 (SP1)
Windows NT 3.2 NT 3.2 1994 NT 3.2 NT version of Windows 3.2 or Chinese version of Windows NT 3.11
  • Windows NT 3.2 Server
  • Windows NT 3.2 Advanced Server
 5xx
Windows 3.5 NT 3.5 September 20, 1994 Daytona
  • Windows 3.5 Server
 807
Windows 3.51 NT 3.51 May 29, 1995
  • Windows 3.51 Server
 1057.6 (SP5)
Windows NT 4.0 NT 4.0 July 29, 1996 Shell Update Release, NT 96
  • Windows NT 4.0 Server
  • Windows NT 4.0 Enterprise Server
  • Windows NT 4.0 Terminal Server
 1381.7097 (SP7) December 3, 2004
Windows NT 5.0 NT 5.0 February 17, 2000 NT 5.0 The last Windows OS that was branded as "Windows NT".
  • Windows NT 5.0 Server
  • Windows NT 5.0 Advanced Server
  • Windows NT 5.0 Datacenter Server
 2195.7397 (SP5) July 13, 2010
Windows Server 2000 NT 4.9 Memphis A server counterpart of Windows 2000
  • Windows Server 2000
  • Windows Advanced Server 2000
  • Windows Datacenter Server 2000
Windows Server 2000 R2 NT 5.1 October 24, 2000 Whistler Server A server counterpart of Windows Whistler.
  • Windows Server 2000 R2
  • Windows Advanced Server 2000 R2
  • Windows Datacenter Server 2000 R2
 2296 2013
Windows Server 2001 NT 5.2 October 25, 2001 Odyssey Server A server counterpart of Windows XP.
  • Windows Server 2001
  • Windows Advanced Server 2001
 2600.7259 (SP4) April 8, 2014
Windows Server 2003 NT 5.3 April 24, 2003 Triton Server A server counterpart of Windows 2003.
  • 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.xxxx (SP3) July 14, 2015
Windows Server 2004 NT 6.0 April 25, 2004 Longhorn Server (pre-reset) A server counterpart of Windows Longhorn.
  • Windows Standard Server 2004
  • Windows Enterprise Server 2004
  • Windows Datacenter Server 2004
  • Windows Web Server 2004
  • Windows Small Business Server 2004
 4074
Windows Server 2003 R2 NT 6.0 April 1, 2005 Longhorn Server (post-reset) Another server counterpart of Windows Longhorn.
  • 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
 5048
Windows Server 2007 NT 6.05 January 30, 2007 Server 6, Vista Server A server counterpart of Windows Vista.
  • Windows Standard Server 2007
  • Windows Enterprise Server 2007
  • Windows Datacenter Server 2007
  • Windows Server 2007 for Itanium-based Systems
  • Windows Foundation Server 2007
  • Windows Essential Business Server 2007
  • Windows HPC Server 2007
  • Windows Small Business Server 2007
  • Windows Storage Server 2007
  • Windows Web Server 2007
  • Windows Home Server
 6003.20597 (SP3) April 11, 2017
Windows Server 2008 NT 6.1 December 12, 2008 Vienna Server A server counterpart of Windows Vienna.
  • 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
 7000 January 14, 2020
Windows Server 2008 R2 NT 6.2 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
 7600.16905 (Update)
Windows Server 2008 R3 October 22, 2011 (as a service pack), August 30, 2011 (as a non-service pack) Server 7.1
  • Windows Foundation Server 2008 R3
  • Windows Standard Server 2008 R3
  • Windows Enterprise Server 2008 R3
  • Windows Datacenter Server 2008 R3 (the only edition that was available for non-service pack version)
  • Windows Server 2008 R3 for Itanium-based Systems
  • Windows Web Server 2008 R3
  • Windows Storage Server 2008 R3
  • Windows HPC Server 2008 R3
  • Windows Small Business Server 2011
  • Windows MultiPoint Server 2011
  • Windows Home Server 2011
 7601.24387 (Update), 8102.101 (as a non-service pack)
Windows Server 2012 NT 6.3 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, Server 8.1
  • 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 2012 R2.1 April 8, 2014 Server 8.11 An updated version of Windows Server 2012 R2.
  • Windows Foundation Server 2012 R2.1
  • Windows Essentials Server 2012 R2.1
  • Windows Standard Server 2012 R2.1
  • Windows Datacenter Server 2012 R2.1
  • Windows MultiPoint Server 2012 R2.1
 9600.17476 (as Windows Server 2012 R2.1)
9600.31213 (Chinese version)
Windows Server 2014 NT 6.4 September 12, 2014 Server 9
  • Windows Essentials Server 2014
  • Windows Standard Server 2014
  • Windows Datacenter Server 2014
 9841 2024 or 2025
Windows Server 2016 NT 10.0 October 12, 2016 Threshold Server
  • Windows Essentials Server 2016
  • Windows Standard Server 2016
  • Windows Datacenter Server 2016
 10586 January 12, 2027
Windows Server 2019 May 21, 2019 Server 19H1
  • Windows Essentials Server 2019
  • Windows Standard Server 2019
  • Windows Datacenter Server 2019
 18362.116 January 9, 2029
Windows Server 2020 May 27, 2020 Server 20H1 A server counterpart of Windows 2020.
  • Windows Essentials Server 2020
  • Windows Standard Server 2020
  • Windows Datacenter Server 2020
 19041.208 2030?
Windows Server 2022 20348 August 18, 2021 21H2 A client counterpart of Windows 10 21H2
Windows Server 2023 25398 October 17, 2023 23H2 A client counterpart of Windows 11 2023 Update
Windows Server 2025 26100 July 25, 2024 24H2 A client counterpart of Windows 11 2024 Update
Windows Server 2025 R2 27547 November 6, 2025 25H2 A client counterpart Windows 11 2024 Update

Device versions[edit | edit source]

Appliances[edit | edit source]

Name Version Release date Codename An edition of Additional information Sold with
Windows XP Media Center Edition NT 5.2/NT 5.3 2001, 2002, 2003, 2004, 2005, and 2006 Trident (2001)
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, August 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
Windows RT 8.11 April 8, 2014 RT 8.1 Update 1 Windows 8.11
Windows RT 8.2 2014 Windows 8.2 A Chinese version of Windows RT 8.1

Mobile devices[edit | edit source]

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

  • Windows 2020
    • Windows 2020 Mobile
    • Windows 2020 Mobile Enterprise
    • Windows 2020 IoT Mobile
    • Windows 2020 IoT Mobile Enterprise
  • Windows 10
    • Windows 10 Mobile
    • Windows 10 Mobile Enterprise
    • Windows 10 IoT Mobile
    • Windows 10 IoT Mobile Enterprise
  • Windows 9
  • Windows 9 Mobile
  • Windows 9 Mobile Enterprise
  • Windows Phone
    • Windows Phone 8.2
    • Windows Phone 8.11
    • Windows Phone 8.1
    • Windows Phone 8
    • Windows Phone 7.8
    • Windows Phone 7.5
    • Windows Phone 7.1
    • Windows Phone 7
  • Windows Mobile
    • Windows Mobile 6.5
    • Windows Mobile 6.1
    • Windows Mobile 6.0
    • Windows Mobile 5.1
    • Windows Mobile 5.0
    • Windows Mobile 2003 Third Edition
    • Windows Mobile 2003 Second Edition
    • Windows Mobile 2003
    • Pocket PC 2002
    • Pocket PC 2001
    • Pocket PC 2000

Embedded devices[edit | edit source]

  • Windows Embedded
    • Windows Embedded 9
    • Windows Embedded 8.11
    • Windows Embedded 8.1
    • Windows Embedded 8
    • Windows Embedded 7.1
    • 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. Before 1998, it used to be called Windows NT 4.1.
  • Windows Embedded Compact
    • Windows Embedded Compact 2013
    • Windows Embedded Compact 7.1
    • Windows Embedded Compact 7
    • Windows Embedded CE 6.1 (2007)
    • Windows Embedded CE 6.0 (2006)
    • Windows CE 5.1 (2006), with a version for smartphones and PDAs sold as Windows Mobile 5.1
    • Windows CE 5.0 (2005), with a version for smartphones and PDAs sold as Windows Mobile 5.0
    • Windows CE 4.3 (2005), with a version for smartphones and PDAs sold as Windows Mobile 2003 TE
    • 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 3.1 (2001), with a version for smartphones and PDAs sold as Pocket PC 2001
    • Windows CE 3.0 (June 2000), with a version for smartphones and PDAs sold as Pocket PC 2000
    • Windows CE 2.13 (January 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[edit | edit source]

  • Windows 2020X

Cancelled versions[edit | edit source]

  • Windows 10X or Santorini - originally a successor of Windows 10, it had been scrapped for Windows 10X and replaced/integrated by Windows 11 released on 2021.
  • 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.
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