List of Windows operating systems: Difference between revisions
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!width=15%|Additional information | !width=15%|Additional information | ||
!width=15%|Editions | !width=15%|Editions | ||
!width=15%|Latest build | |||
!width=15%|Unsupported as of | |||
|- | |- | ||
! colspan=" | ! colspan="8"|Windows 1.0x | ||
|- | |- | ||
|Windows 1.00 | |Windows 1.00 | ||
|1.00 | |1.00 | ||
|November 6, 1985 | |November 6, 1985 | ||
|rowspan=" | |rowspan="5"|Interface Manager | ||
|First release of Windows | |First release of Windows | ||
|rowspan=" | |rowspan="5"| | ||
*Windows/286 | |||
*Windows/386 | |||
|rowspan="5"|N/A | |||
|rowspan="5"|December 31, 2001 | |||
|- | |- | ||
|Windows 1.01 | |Windows 1.01 | ||
Line 39: | Line 45: | ||
| | | | ||
|- | |- | ||
! colspan="8"|Windows 2.0x | |||
! colspan=" | |||
|- | |- | ||
|Windows 2.00 | |Windows 2.00 | ||
|2.00 | |2.00 | ||
|rowspan=" | |rowspan="4"|December 9, 1987 | ||
| | | | ||
| | |rowspan="4"|They doesn't work with Intel 80486 processors | ||
|rowspan=" | |rowspan="4"| | ||
*Windows/286 | |||
*Windows/386 | |||
|rowspan="4"|N/A | |||
|rowspan="4"|December 31, 2001 | |||
|- | |- | ||
|Windows 2.01 | |Windows 2.01 | ||
|2.01 | |2.01 | ||
| | | | ||
|- | |- | ||
|Windows 2.02 | |Windows 2.02 | ||
|2.02 | |2.02 | ||
| | | | ||
|- | |- | ||
|Windows 2.03 | |Windows 2.03 | ||
|2.03 | |2.03 | ||
| | | | ||
|- | |- | ||
! colspan=" | ! colspan="8"|Windows 2.1x | ||
|- | |- | ||
|Windows 2.1 | |Windows 2.1 | ||
Line 84: | Line 81: | ||
*Windows/386 | *Windows/386 | ||
*Windows/486 | *Windows/486 | ||
|rowspan="2"|N/A | |||
|rowspan="2"|December 31, 2001 | |||
|- | |- | ||
|Windows 2.11 | |Windows 2.11 | ||
Line 91: | Line 90: | ||
| | | | ||
|- | |- | ||
! colspan=" | ! colspan="8"|Windows 3.0x | ||
|- | |- | ||
|Windows 3.00 | |Windows 3.00 | ||
|3.00 | |||
|May 22, 1990 | |||
| | | | ||
|Like Windows 2.1x, Windows 3.0x does work with Intel 80486 processors | |||
|rowspan="2"|N/A | |||
|rowspan="2"|N/A | |||
|rowspan="2"|December 31, 2001 | |||
|- | |- | ||
|Windows 3.01 | |Windows 3.01 | ||
|3.01 | |||
|October 20, 1991 | |||
| | | | ||
|Sometimes called Windows Graphical Environment with Multimedia Extensions 1.0 | |Sometimes called Windows Graphical Environment with Multimedia Extensions 1.0 | ||
|- | |- | ||
! colspan="8"|Windows 3.1x | |||
! colspan=" | |||
|- | |- | ||
|Windows 3.1 | |Windows 3.1 | ||
Line 122: | Line 115: | ||
| | | | ||
|rowspan="6"|N/A | |rowspan="6"|N/A | ||
|rowspan="6"|N/A | |||
|rowspan="6"|December 31, 2001 | |||
|- | |- | ||
|Windows for Workgroups 3.1 | |Windows for Workgroups 3.1 | ||
Line 153: | Line 148: | ||
|Chinese version of Windows for Workgroups 3.1x | |Chinese version of Windows for Workgroups 3.1x | ||
|- | |- | ||
! colspan=" | ! colspan="8"|Windows 9x | ||
|- | |- | ||
|Windows 95 | |Windows 95 | ||
Line 168: | Line 163: | ||
*Windows 95 Service Pack 2.1 (August 27, 1997) | *Windows 95 Service Pack 2.1 (August 27, 1997) | ||
*Windows 95 Service Pack 2.5 (November 26, 1997) | *Windows 95 Service Pack 2.5 (November 26, 1997) | ||
|950 | |||
|rowspan="2"|December 31, 2001 | |||
|- | |- | ||
|Windows 96 | |Windows 96 | ||
|4.1 | |rowspan="2"|4.1 | ||
|May 3, 1996 | |May 3, 1996 | ||
|Cleveland, Nashville | |Cleveland, Nashville | ||
| | |||
| | |||
*Windows 96 | |||
*Windows 96 Service Pack 1 (1997) | |||
|1265 (RTM), 1326 (SP1) | |||
|- | |||
|Windows 97 | |||
|June 24, 1997 | |||
|ChiCairo | |||
| | | | ||
|N/A | |N/A | ||
|1538 | |||
|December 31, 2004 | |||
|- | |- | ||
|Windows 98 | |Windows 98 | ||
|4.2 | |rowspan="2"|4.2 | ||
|June 21, 1998 | |June 21, 1998 | ||
|Memphis | |Memphis | ||
| | |In winver, it incorrectly says 4.10, like Windows 96. | ||
| | |N/A | ||
|1998 | |||
|rowspan="3"|July 11, 2006 | |||
|- | |||
|Windows 99 | |||
|April 23, 1999 | |||
|Dolly | |||
|Also known as Windows 98 Second Edition. | |||
|N/A | |||
|2222A | |||
|- | |- | ||
|Windows Me | |Windows Me | ||
Line 191: | Line 206: | ||
| | | | ||
|N/A | |N/A | ||
|3000 | |||
|- | |- | ||
! colspan=" | ! colspan="8"|Windows NT | ||
|- | |- | ||
|Windows NT 3.1 | |Windows NT 3.1 | ||
Line 201: | Line 217: | ||
| | | | ||
*Windows NT 3.1 Workstation | *Windows NT 3.1 Workstation | ||
|511 (SP1) | |||
|rowspan="7"|December 31, 2001 | |||
|- | |- | ||
|Windows NT for Workgroups 3.1 | |Windows NT for Workgroups 3.1 | ||
Line 206: | Line 224: | ||
|NT version of Windows for Workgroups 3.1 | |NT version of Windows for Workgroups 3.1 | ||
|N/A | |N/A | ||
|5xx | |||
|- | |- | ||
|Windows NT 3.11 | |Windows NT 3.11 | ||
|rowspan="2"|NT 3.11 | |rowspan="2"|NT 3.11 | ||
| | |1994 | ||
|NT OS/2 | |NT OS/2 | ||
|NT version of Windows 3.11. | |NT version of Windows 3.11. | ||
| | | | ||
*Windows NT 3.11 Workstation | *Windows NT 3.11 Workstation | ||
|528 (SP1) | |||
|- | |- | ||
|Windows NT for Workgroups 3.11 | |Windows NT for Workgroups 3.11 | ||
| | |1994 | ||
|Razzle | |Razzle | ||
|NT version of Windows for Workgroups 3.11. | |NT version of Windows for Workgroups 3.11. | ||
|N/A | |N/A | ||
|5xx | |||
|- | |- | ||
|Windows NT 3.2 | |Windows NT 3.2 | ||
Line 228: | Line 249: | ||
| | | | ||
*Windows NT 3.2 Workstation | *Windows NT 3.2 Workstation | ||
|5xx | |||
|- | |- | ||
|Windows 3.5 | |Windows 3.5 | ||
Line 236: | Line 258: | ||
| | | | ||
*Windows 3.5 Workstation | *Windows 3.5 Workstation | ||
|807 | |||
|- | |- | ||
|Windows 3.51 | |Windows 3.51 | ||
Line 243: | Line 266: | ||
| | | | ||
*Windows 3.51 Workstation | *Windows 3.51 Workstation | ||
|1057.6 (SP5) | |||
|- | |- | ||
|Windows NT 4.0 | |Windows NT 4.0 | ||
Line 251: | Line 275: | ||
| | | | ||
*Windows NT 4.0 Workstation | *Windows NT 4.0 Workstation | ||
|1381.7097 (SP7) | |||
|December 3, 2004 | |||
|- | |- | ||
|Windows NT 5.0 | |Windows NT 5.0 | ||
|rowspan="2"|NT 5.0 | |rowspan="2"|NT 5.0 | ||
|rowspan="2"|February 17, 2000 | |rowspan="2"|February 17, 2000 | ||
| | |NT 5.0 | ||
| | | | ||
| | | | ||
*Windows NT 5.0 Workstation | *Windows NT 5.0 Workstation | ||
|rowspan="2"|2195.7397 (SP5) | |||
|rowspan="2"|July 13, 2010 | |||
|- | |- | ||
|Windows 2000 | |Windows 2000 | ||
|Memphis | |||
| | | | ||
| | | | ||
Line 272: | Line 301: | ||
| | | | ||
*Windows XP Starter | *Windows XP Starter | ||
*Windows XP Home | *Windows XP Home | ||
*Windows XP Professional | *Windows XP Professional | ||
*Windows XP 64-bit Edition | *Windows XP 64-bit Edition | ||
*Windows Fundamentals for Legacy PCs (July 8, 2006) | *Windows Fundamentals for Legacy PCs (July 8, 2006) | ||
|2600.7259 (SP4) | |||
|rowspan="2"|April 8, 2014 | |||
|- | |- | ||
|Windows XP Professional x64 Edition | |Windows XP Professional x64 Edition | ||
|NT 5.2 | |NT 5.2 | ||
|April 25, 2005 | |April 25, 2005 | ||
|Sundown | |||
| | |||
|N/A | |N/A | ||
|3790.xxxx (SP3) | |||
|- | |||
|Windows Longhorn | |||
|rowspan="2"|NT 6.0 | |||
|April 1, 2005 | |||
|Longhorn | |||
|A beta version of Windows Vista. | |||
| | | | ||
| | *Windows Longhorn Professional | ||
|5048 | |||
|July 14, 2015 | |||
|- | |- | ||
|Windows Vista | |Windows Vista | ||
|January 30, 2007 | |January 30, 2007 | ||
| | |Six | ||
| | | | ||
| | | | ||
Line 294: | Line 334: | ||
*Windows Vista Home Basic | *Windows Vista Home Basic | ||
*Windows Vista Home Premium | *Windows Vista Home Premium | ||
*Windows Vista Business | *Windows Vista Business | ||
*Windows Vista Enterprise | *Windows Vista Enterprise | ||
*Windows Vista Ultimate | *Windows Vista Ultimate | ||
|6003.20597 (SP3) | |||
|April 11, 2017 | |||
|- | |||
|Windows Vienna | |||
|rowspan="2"|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 | |||
|rowspan="3"|January 14, 2020 | |||
|- | |- | ||
|Windows 7 | |Windows 7 | ||
|October 22, 2009 | |October 22, 2009 | ||
| | |Seven | ||
| | | | ||
| | | | ||
Line 312: | Line 367: | ||
*Windows 7 Ultimate | *Windows 7 Ultimate | ||
*Windows Thin PC | *Windows Thin PC | ||
|7600.16905 (SP1) | |||
|- | |- | ||
|Windows 7.1 | |Windows 7.1 | ||
|NT 6.11 | |NT 6.11 | ||
|February 22, 2011 | |February 22, 2011 | ||
| | |7.1 | ||
| | | | ||
| | | | ||
Line 326: | Line 382: | ||
*Windows 7.1 Ultimate | *Windows 7.1 Ultimate | ||
*Windows 7.1 Thin PC | *Windows 7.1 Thin PC | ||
|7601.24387 (SP1) | |||
|- | |- | ||
|Windows 8 | |Windows 8 | ||
Line 334: | Line 391: | ||
| | | | ||
*Windows 8 | *Windows 8 | ||
*Windows 8 | *Windows 8 Pro | ||
*Windows 8 Home | |||
*Windows 8 Enterprise | *Windows 8 Enterprise | ||
*Windows 8 Core | |||
*Windows 8 OEM | *Windows 8 OEM | ||
|9200 | |||
|rowspan="3"|January 10, 2023 | |||
|- | |- | ||
|Windows 8.1 | |Windows 8.1 | ||
|NT 6.3 | |rowspan="2"|NT 6.3 | ||
|October 17, 2013 | |October 17, 2013 | ||
|Blue | |Blue | ||
Line 345: | Line 406: | ||
| | | | ||
*Windows 8.1 | *Windows 8.1 | ||
*Windows 8.1 | *Windows 8.1 Pro | ||
*Windows 8.1 Home | |||
*Windows 8.1 Enterprise | *Windows 8.1 Enterprise | ||
*Windows 8.1 Core | |||
*Windows 8.1 OEM | *Windows 8.1 OEM | ||
*Windows 8.1 with Bing | *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 8.11 | |||
*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 | |||
|9600.31213 (SP1 or Windows 8.2) | |||
|- | |||
|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 | |Windows 10 | ||
|NT 10.0 | |rowspan="2"|NT 10.0 | ||
|2015 | |July 29, 2015 (1507)<br/>November 10, 2015 (1511)<br/>August 2, 2016 (1607)<br/>April 5, 2017 (1703)<br/>October 17, 2017 (1709)<br/>April 30, 2018 (1803)<br/>November 13, 2018 (1809)<br/>May 21, 2019 (1903) | ||
|Threshold | |Threshold (1507)<br/>Threshold 2 (1511)<br/>Redstone (1607)<br/>Redstone 2 (1709)<br/>Redstone 3 (1709)<br/>Redstone 4 (1803)<br/>Redstone 5 (1809)<br/>19H1 (1903)<br/>19H2 (1909) | ||
|Also known as Windows X | |||
| | | | ||
*Windows 10 Home | |||
*Windows 10 Home | *Windows 10 Pro | ||
*Windows 10 | *Windows 10 Pro Education | ||
*Windows 10 | *Windows 10 Pro for Workstations | ||
*Windows 10 | |||
*Windows 10 Enterprise | *Windows 10 Enterprise | ||
*Windows 10 Enterprise LTSC (formerly LTSB) | *Windows 10 Enterprise LTSC (formerly LTSB) | ||
Line 366: | Line 458: | ||
*Windows 10 IoT Enterprise | *Windows 10 IoT Enterprise | ||
*Windows 10 S (now an operational mode within Enterprise and Education) | *Windows 10 S (now an operational mode within Enterprise and Education) | ||
|10240 (1507)<br/>10586 (1511)<br/>14393 (1607)<br/>15063 (1703)<br/>16299 (1709)<br/>17134 (1803)<br/>17763 (1809)<br/>18362.116 (1903) | |||
|October 14, 2025 | |||
|- | |- | ||
|Windows 2020 | |||
|2020 | |||
|20H1 | |||
|A successor to Windows 10 19H2. Not yet finished. | |||
| | |||
*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 | |||
|Not yet released | |||
|Not yet released | |||
|} | |} | ||
Line 378: | Line 489: | ||
!width=15%|Additional information | !width=15%|Additional information | ||
!width=15%|Editions | !width=15%|Editions | ||
!width="5%|Latest build | |||
!width=15%|Unsupported as of | |||
|- | |- | ||
|Windows NT 3.1 | |Windows NT 3.1 | ||
Line 387: | Line 500: | ||
*Windows NT 3.1 Server | *Windows NT 3.1 Server | ||
*Windows NT 3.1 Advanced Server | *Windows NT 3.1 Advanced Server | ||
|511 (SP1) | |||
|rowspan="5"|December 31, 2001 | |||
|- | |- | ||
|Windows NT 3.11 | |Windows NT 3.11 | ||
|NT 3.11 | |NT 3.11 | ||
| | |1994 | ||
|NT OS/2 | |NT OS/2 | ||
|NT version of Windows 3.11 | |NT version of Windows 3.11 | ||
Line 396: | Line 511: | ||
*Windows NT 3.11 Server | *Windows NT 3.11 Server | ||
*Windows NT 3.11 Advanced Server | *Windows NT 3.11 Advanced Server | ||
|528 (SP1) | |||
|- | |- | ||
|Windows NT 3.2 | |Windows NT 3.2 | ||
Line 405: | Line 521: | ||
*Windows NT 3.2 Server | *Windows NT 3.2 Server | ||
*Windows NT 3.2 Advanced Server | *Windows NT 3.2 Advanced Server | ||
|5xx | |||
|- | |- | ||
|Windows 3.5 | |Windows 3.5 | ||
Line 413: | Line 530: | ||
| | | | ||
*Windows 3.5 Server | *Windows 3.5 Server | ||
|807 | |||
|- | |- | ||
|Windows 3.51 | |Windows 3.51 | ||
Line 420: | Line 538: | ||
| | | | ||
*Windows 3.51 Server | *Windows 3.51 Server | ||
|1057.6 (SP5) | |||
|- | |- | ||
|Windows NT 4.0 | |Windows NT 4.0 | ||
Line 430: | Line 549: | ||
*Windows NT 4.0 Enterprise Server | *Windows NT 4.0 Enterprise Server | ||
*Windows NT 4.0 Terminal Server | *Windows NT 4.0 Terminal Server | ||
|1381.7097 (SP7) | |||
|December 3, 2004 | |||
|- | |- | ||
|Windows NT 5.0 | |Windows NT 5.0 | ||
|rowspan="2"|NT 5.0 | |rowspan="2"|NT 5.0 | ||
|rowspan="2"|February 17, 2000 | |rowspan="2"|February 17, 2000 | ||
| | |NT 5.0 | ||
| | | | ||
| | | | ||
Line 440: | Line 561: | ||
*Windows NT 5.0 Advanced Server | *Windows NT 5.0 Advanced Server | ||
*Windows NT 5.0 Datacenter Server | *Windows NT 5.0 Datacenter Server | ||
|rowspan="2"|2195.7397 (SP5) | |||
|rowspan="2"|July 13, 2010 | |||
|- | |- | ||
|Windows Server 2000 | |Windows Server 2000 | ||
|Memphis | |Memphis | ||
| | |A server counterpart of Windows 2000 | ||
| | | | ||
*Windows Server 2000 | *Windows Server 2000 | ||
Line 450: | Line 573: | ||
|- | |- | ||
|Windows Server 2003 | |Windows Server 2003 | ||
|NT 5.2 | |||
|April 24, 2003 | |April 24, 2003 | ||
|Whistler Server | |Whistler Server | ||
| | |A server counterpart of Windows XP. | ||
| | | | ||
*Windows Standard Server 2003 | *Windows Standard Server 2003 | ||
Line 461: | Line 584: | ||
*Windows Storage Server 2003 | *Windows Storage Server 2003 | ||
*Windows Small Business Server 2003 | *Windows Small Business Server 2003 | ||
|3790.xxxx (SP3) | |||
|rowspan="2"|July 14, 2015 | |||
|- | |- | ||
|Windows Server 2003 R2 | |Windows Server 2003 R2 | ||
|rowspan="2"|NT 6.0 | |||
|December 6, 2005 | |December 6, 2005 | ||
| | |Longhorn Server | ||
| | |A server counterpart of Windows Longhorn. | ||
| | | | ||
*Windows Standard Server 2003 R2 | *Windows Standard Server 2003 R2 | ||
Line 474: | Line 600: | ||
*Windows Small Business Server 2003 R2 | *Windows Small Business Server 2003 R2 | ||
*Windows Compute Cluster Server 2003 | *Windows Compute Cluster Server 2003 | ||
|5048 | |||
|- | |||
|Windows Server 2007 | |||
|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 | *Windows Home Server | ||
|6003.20597 (SP3) | |||
|April 11, 2017 | |||
|- | |- | ||
|Windows Server 2008 | |Windows Server 2008 | ||
|NT 6. | |rowspan="2"|NT 6.1 | ||
| | |December 12, 2008 | ||
| | |Vienna Server | ||
| | |A server counterpart of Windows Vienna. | ||
| | | | ||
*Windows Standard Server 2008 | *Windows Standard Server 2008 | ||
Line 492: | Line 637: | ||
*Windows Storage Server 2008 | *Windows Storage Server 2008 | ||
*Windows Web Server 2008 | *Windows Web Server 2008 | ||
|7000 | |||
|rowspan="3"|January 14, 2020 | |||
|- | |- | ||
|Windows Server 2008 R2 | |Windows Server 2008 R2 | ||
|October 22, 2009 | |October 22, 2009 | ||
| | |Server 7 | ||
| | | | ||
| | | | ||
Line 510: | Line 656: | ||
*Windows Home Server 2010 | *Windows Home Server 2010 | ||
*Windows MultiPoint Server 2010 | *Windows MultiPoint Server 2010 | ||
|7600.16905 (SP1) | |||
|- | |- | ||
|Windows Server 2008 R3 | |Windows Server 2008 R3 | ||
|NT 6.11 | |NT 6.11 | ||
|October 22, 2011 | |October 22, 2011 | ||
| | |Server 7.1 | ||
| | | | ||
| | | | ||
Line 528: | Line 675: | ||
*Windows MultiPoint Server 2011 | *Windows MultiPoint Server 2011 | ||
*Windows Home Server 2011 | *Windows Home Server 2011 | ||
|7601.24387 (SP1) | |||
|- | |- | ||
|Windows Server 2012 | |Windows Server 2012 | ||
|NT 6.2 | |NT 6.2 | ||
|September 4, 2012 | |September 4, 2012 | ||
Line 541: | Line 688: | ||
*Windows Datacenter Server 2012 | *Windows Datacenter Server 2012 | ||
*Windows MultiPoint Server 2012 | *Windows MultiPoint Server 2012 | ||
|9200 | |||
|rowspan="3"|October 10, 2023 | |||
|- | |- | ||
|Windows Server 2012 R2 | |Windows Server 2012 R2 | ||
|NT 6.3 | |rowspan="2"|NT 6.3 | ||
|October 17, 2013 | |October 17, 2013 | ||
|Server Blue, Server 8.1 | |Server Blue, Server 8.1 | ||
Line 553: | Line 702: | ||
*Windows Datacenter Server 2012 R2 | *Windows Datacenter Server 2012 R2 | ||
*Windows MultiPoint Server 2012 R2 | *Windows MultiPoint Server 2012 R2 | ||
|9600.16384 | |||
|- | |||
|Windows Server 2012 R3 | |||
|April 8, 2014 | |||
|Server 8.11 | |||
|An updated version of Windows Server 2012 R2. | |||
| | |||
*Windows Foundation Server 2012 R3 | |||
*Windows Essentials Server 2012 R3 | |||
*Windows Standard Server 2012 R3 | |||
*Windows Datacenter Server 2012 R3 | |||
*Windows MultiPoint Server 2012 R3 | |||
|9600.31213 (SP1 or Windows Server 2012 R3.1) | |||
|- | |||
|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 | |Windows Server 2016 | ||
|rowspan=" | |rowspan="3"|NT 10.0 | ||
|October 12, 2016 | |October 12, 2016 | ||
|Threshold Server | |Threshold Server | ||
Line 563: | Line 737: | ||
*Windows Standard Server 2016 | *Windows Standard Server 2016 | ||
*Windows Datacenter Server 2016 | *Windows Datacenter Server 2016 | ||
|10586 | |||
|January 12, 2027 | |||
|- | |- | ||
|Windows Server 2019 | |Windows Server 2019 | ||
| | |May 21, 2019 | ||
| | |Server 19H1 | ||
| | | | ||
| | | | ||
Line 572: | Line 748: | ||
*Windows Standard Server 2019 | *Windows Standard Server 2019 | ||
*Windows Datacenter Server 2019 | *Windows Datacenter Server 2019 | ||
|18362.116 | |||
|January 9, 2029 | |||
|- | |||
|Windows Server 2020 | |||
|2020 | |||
|Server 20H1 | |||
|A successor to Windows Server 19H2. Not yet finished. | |||
| | |||
*Windows Essentials Server 2020 | |||
*Windows Standard Server 2020 | |||
*Windows Datacenter Server 2020 | |||
|Not yet released | |||
|Not yet released | |||
|} | |} | ||
Line 581: | Line 770: | ||
!width=15%|Version | !width=15%|Version | ||
!width=15%|Release date | !width=15%|Release date | ||
!width=15%|Codename | |||
!width=15%|An edition of | !width=15%|An edition of | ||
!width=15%|Additional information | !width=15%|Additional information | ||
Line 586: | Line 776: | ||
|- | |- | ||
|Windows XP Media Center Edition | |Windows XP Media Center Edition | ||
|NT 5.1/NT 5.2 | |rowspan="2"|NT 5.1/NT 5.2 | ||
|2001, 2002, 2003, 2004, 2005, and 2006 | |2001, 2002, 2003, 2004, 2005, and 2006 | ||
|Trident (2001)<br/>eHome (2002)<br/>Freestyle (2003)<br/>Harmony (2004)<br/>Symphony (2005)<br/>Emerald (2006) | |||
|rowspan="2"|Windows XP | |rowspan="2"|Windows XP | ||
| | | | ||
Line 593: | Line 784: | ||
|- | |- | ||
|Windows XP Tablet PC Edition | |Windows XP Tablet PC Edition | ||
| | |November 2002, 2003, 2004, and 2005 | ||
| | |Mira (2002) | ||
| | | | ||
|Microsoft Tablet PC | |Microsoft Tablet PC | ||
Line 601: | Line 792: | ||
|NT 6.2 | |NT 6.2 | ||
|October 26, 2012 | |October 26, 2012 | ||
|Windows on ARM | |||
|Windows 8 | |Windows 8 | ||
| | | | ||
|rowspan=" | |rowspan="3"|ARM-based tablet computers | ||
|- | |- | ||
|Windows RT 8.1 | |Windows RT 8.1 | ||
|NT 6.3 | |rowspan="2"|NT 6.3 | ||
|October 18, 2013 | |October 18, 2013 | ||
|RT Blue | |||
|Windows 8.1 | |Windows 8.1 | ||
| | |||
|- | |||
|Windows RT 8.11 | |||
|April 8, 2014 | |||
|RT 8.1 Update 1 | |||
|Windows 8.11 | |||
| | | | ||
|} | |} | ||
===Mobile devices=== | ===Mobile devices=== | ||
Mobile devices include smartphones, handheld tablet computers, and personal digital assistants | 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 | ||
**Windows 10 Mobile | **Windows 10 Mobile | ||
Line 618: | Line 823: | ||
**Windows 10 IoT Mobile | **Windows 10 IoT Mobile | ||
**Windows 10 IoT Mobile Enterprise | **Windows 10 IoT Mobile Enterprise | ||
*Windows 9 | |||
*Windows 9 Mobile | |||
*Windows 9 Mobile Enterprise | |||
*Windows Phone | *Windows Phone | ||
*Windows Phone 8.11 | |||
**Windows Phone 8.1 | **Windows Phone 8.1 | ||
**Windows Phone 8 | **Windows Phone 8 | ||
Line 639: | Line 848: | ||
===Embedded devices=== | ===Embedded devices=== | ||
*Windows Embedded | *Windows Embedded | ||
**Windows Embedded 9 | |||
**Windows Embedded 8.11 | |||
**Windows Embedded 8.1 | **Windows Embedded 8.1 | ||
**Windows Embedded 8 | **Windows Embedded 8 | ||
Line 647: | Line 858: | ||
**Windows Embedded 2009 | **Windows Embedded 2009 | ||
**Windows XP Embedded | **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 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 | ||
Line 672: | Line 881: | ||
==Canceled versions== | ==Canceled versions== | ||
* | *Microsoft ''Odyssey'' – a version intended to be an update to the Microsoft Windows NT 5.x codebase. The teams working on Neptune and Odyssey combined to work on Windows XP. | ||
*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 ''Triton'' (2001) – a planned successor to Microsoft ''Neptune''. | ||
*Windows NT 4.1 (1997) – former name of Windows NT 4.0 Embedded. | *Windows NT 4.1 (1997) – former name of Windows NT 4.0 Embedded. | ||
* | *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. | |||
*Windows 0.x (1983) – also known as Windows Interface Manager Internal Test Release 3. | |||
*Windows 4.0 (1995) – former name of Windows 95. | *Windows 4.0 (1995) – former name of Windows 95. | ||
*Windows 4.1 (1996) – former name of Windows 96. | *Windows 4.1 (1996) – former name of Windows 96. | ||
*Windows 4.2 (1998) – former name of Windows 98. | *Windows 4.2 (1998) – former name of Windows 98. | ||
*Windows 4.9 (2000) – former name of Windows Me. | *Windows 4.9 (2000) – former name of Windows Me. | ||
*Windows 5 (1999) – former | *Windows 5 (1999) – former names of Windows 2000. | ||
*Windows 2001 (2001) and Windows 5.1 (2001) – former names of Windows XP. | *Windows 2000 Server (1999) - former name of Windows Server 2000. | ||
*Windows 2001 (2001), Windows 101 (2001), Windows 5.1 (2001), Windows NT XP (2001), and Windows NT 5.1 (2001) – former names of Windows XP. | |||
*Windows 6 (2006) – former name of Windows Vista. | *Windows 6 (2006) – former name of Windows Vista. | ||
*Windows 8.2 (2014) | *Windows 8.2 (2014) – former name of Windows 9. | ||
*Windows 9.1 (2015) – former name of Windows 10. | |||
*Windows 10 20H1 (2020) – former name of Windows 2020. | |||
*Windows Server 20H1 (2020) and Windows 2020 Server (2020) – former names of Windows Server 2020. |
Revision as of 19:21, 16 September 2019
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 1.00 | 1.00 | November 6, 1985 | Interface Manager | First release of Windows |
|
N/A | December 31, 2001 |
Windows 1.01 | 1.01 | November 20, 1985 | |||||
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 2.00 | 2.00 | December 9, 1987 | They doesn't work with Intel 80486 processors |
|
N/A | December 31, 2001 | |
Windows 2.01 | 2.01 | ||||||
Windows 2.02 | 2.02 | ||||||
Windows 2.03 | 2.03 | ||||||
Windows 2.1x | |||||||
Windows 2.1 | 2.1 | May 27, 1988 |
|
N/A | December 31, 2001 | ||
Windows 2.11 | 2.11 | March 13, 1989 | |||||
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 | N/A | December 31, 2001 | |
Windows for Workgroups 3.1 | 3.1 | October 1992 | Kato, Sparta | ||||
Windows 3.11 | 3.11 | November 8, 1993 | Janus | ||||
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 | |||
Windows for Workgroups 3.2 | 3.2 | December 1993 | Cougar | Chinese version of Windows for Workgroups 3.1x | |||
Windows 9x | |||||||
Windows 95 | 4.0 | August 24 ,1995 | Chicago |
|
950 | December 31, 2001 | |
Windows 96 | 4.1 | May 3, 1996 | Cleveland, Nashville |
|
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 | 4.9 | 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 |
|
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. |
|
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. |
|
5xx | |
Windows 3.5 | NT 3.5 | September 21, 1994 | Daytona |
|
807 | ||
Windows 3.51 | NT 3.51 | May 30, 1995 |
|
1057.6 (SP5) | |||
Windows NT 4.0 | NT 4.0 | August 24, 1996 | Shell Update Release |
|
1381.7097 (SP7) | December 3, 2004 | |
Windows NT 5.0 | NT 5.0 | February 17, 2000 | NT 5.0 |
|
2195.7397 (SP5) | July 13, 2010 | |
Windows 2000 | Memphis |
| |||||
Windows XP | NT 5.1 | October 25, 2001 | Whistler |
|
2600.7259 (SP4) | April 8, 2014 | |
Windows XP Professional x64 Edition | NT 5.2 | April 25, 2005 | Sundown | N/A | 3790.xxxx (SP3) | ||
Windows Longhorn | NT 6.0 | April 1, 2005 | Longhorn | A beta version of Windows Vista. |
|
5048 | July 14, 2015 |
Windows Vista | January 30, 2007 | Six |
|
6003.20597 (SP3) | April 11, 2017 | ||
Windows Vienna | NT 6.1 | December 12, 2008 | Blackcomb, Vienna | A beta version of Windows 7. |
|
7000 | January 14, 2020 |
Windows 7 | October 22, 2009 | Seven |
|
7600.16905 (SP1) | |||
Windows 7.1 | NT 6.11 | February 22, 2011 | 7.1 |
|
7601.24387 (SP1) | ||
Windows 8 | NT 6.2 | October 26, 2012 | Jupiter, Eight |
|
9200 | January 10, 2023 | |
Windows 8.1 | NT 6.3 | October 17, 2013 | Blue |
|
9600.16384 | ||
Windows 8.11 | April 8, 2014 | 8.1 Update 1 | An updated version of Windows 8.1. |
|
9600.31213 (SP1 or Windows 8.2) | ||
Windows 9 | NT 6.4 | September 12, 2014 | Technical Preview |
|
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) |
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 |
|
10240 (1507) 10586 (1511) 14393 (1607) 15063 (1703) 16299 (1709) 17134 (1803) 17763 (1809) 18362.116 (1903) |
October 14, 2025 |
Windows 2020 | 2020 | 20H1 | A successor to Windows 10 19H2. Not yet finished. |
|
Not yet released | Not yet released |
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 | AXP | NT version of Windows 3.1 |
|
511 (SP1) | December 31, 2001 |
Windows NT 3.11 | NT 3.11 | 1994 | NT OS/2 | NT version of Windows 3.11 |
|
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 |
|
5xx | |
Windows 3.5 | NT 3.5 | September 20, 1994 | Daytona |
|
807 | ||
Windows 3.51 | NT 3.51 | May 29, 1995 |
|
1057.6 (SP5) | |||
Windows NT 4.0 | NT 4.0 | July 29, 1996 | Shell Update Release |
|
1381.7097 (SP7) | December 3, 2004 | |
Windows NT 5.0 | NT 5.0 | February 17, 2000 | NT 5.0 |
|
2195.7397 (SP5) | July 13, 2010 | |
Windows Server 2000 | Memphis | A server counterpart of Windows 2000 |
| ||||
Windows Server 2003 | NT 5.2 | April 24, 2003 | Whistler Server | A server counterpart of Windows XP. |
|
3790.xxxx (SP3) | July 14, 2015 |
Windows Server 2003 R2 | NT 6.0 | December 6, 2005 | Longhorn Server | A server counterpart of Windows Longhorn. |
|
5048 | |
Windows Server 2007 | January 30, 2007 | Server 6, Vista Server | A server counterpart of Windows Vista. |
|
6003.20597 (SP3) | April 11, 2017 | |
Windows Server 2008 | NT 6.1 | December 12, 2008 | Vienna Server | A server counterpart of Windows Vienna. |
|
7000 | January 14, 2020 |
Windows Server 2008 R2 | October 22, 2009 | Server 7 |
|
7600.16905 (SP1) | |||
Windows Server 2008 R3 | NT 6.11 | October 22, 2011 | Server 7.1 |
|
7601.24387 (SP1) | ||
Windows Server 2012 | NT 6.2 | September 4, 2012 | Server 8 |
|
9200 | October 10, 2023 | |
Windows Server 2012 R2 | NT 6.3 | October 17, 2013 | Server Blue, Server 8.1 |
|
9600.16384 | ||
Windows Server 2012 R3 | April 8, 2014 | Server 8.11 | An updated version of Windows Server 2012 R2. |
|
9600.31213 (SP1 or Windows Server 2012 R3.1) | ||
Windows Server 2014 | NT 6.4 | September 12, 2014 | Server 9 |
|
9841 | 2024 or 2025 | |
Windows Server 2016 | NT 10.0 | October 12, 2016 | Threshold Server |
|
10586 | January 12, 2027 | |
Windows Server 2019 | May 21, 2019 | Server 19H1 |
|
18362.116 | January 9, 2029 | ||
Windows Server 2020 | 2020 | Server 20H1 | A successor to Windows Server 19H2. Not yet finished. |
|
Not yet released | Not yet released |
Device versions
Appliances
Name | Version | Release date | Codename | An edition of | Additional information | Sold with |
---|---|---|---|---|---|---|
Windows XP Media Center Edition | NT 5.1/NT 5.2 | 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, 2004, and 2005 | Mira (2002) | 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 |
Mobile devices
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 8.11
- 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
- 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)
Canceled versions
- Microsoft Odyssey – a version intended to be an update to the Microsoft Windows NT 5.x codebase. The teams working on Neptune and Odyssey combined to work on Windows XP.
- 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 Triton (2001) – a planned successor to Microsoft Neptune.
- Windows NT 4.1 (1997) – former name of Windows NT 4.0 Embedded.
- 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.
- Windows 0.x (1983) – also known as Windows Interface Manager Internal Test Release 3.
- Windows 4.0 (1995) – former name of Windows 95.
- Windows 4.1 (1996) – former name of Windows 96.
- Windows 4.2 (1998) – former name of Windows 98.
- Windows 4.9 (2000) – former name of Windows Me.
- Windows 5 (1999) – former names of Windows 2000.
- Windows 2000 Server (1999) - former name of Windows Server 2000.
- Windows 2001 (2001), Windows 101 (2001), Windows 5.1 (2001), Windows NT XP (2001), and Windows NT 5.1 (2001) – former names of Windows XP.
- Windows 6 (2006) – former name of Windows Vista.
- Windows 8.2 (2014) – former name of Windows 9.
- Windows 9.1 (2015) – former name of Windows 10.
- Windows 10 20H1 (2020) – former name of Windows 2020.
- Windows Server 20H1 (2020) and Windows 2020 Server (2020) – former names of Windows Server 2020.