# List of Microsoft operating systems

This is a list of Microsoft written and published operating systems. For the codenames that Microsoft gave their operating systems, see Microsoft codenames. For another list of versions of Microsoft Windows, see, List of Microsoft Windows versions.

## Windows

* See Windows Versions for a full list.

## Windows
### Windows XP until 4.8

| Name | Date of release |
| Windows 1.0 | 1985-11-20 |
| Windows 2.x | 1987-12-09 |
| Windows 3.0 | 1990-05-22 |
| Windows for Workgroups 3.11 | 1993-08-11 |
| Windows NT 3.1 | 1993-10-27 |
| Windows NT 3.5 | 1994-09-21 |
| Windows NT 3.51 | 1995-05-30 |
| Windows 95 | 1995-08-24 |
| Windows NT 4.0 | 1996-07-31 |
| Windows 98 | 1998-06-25 |
| Windows 98 SE | 1999-05-05 |
| Windows 2000 | 2000-02-17 |
| Windows Me | 2000-09-14 |
| Windows XP | 2001-10-25 |
| Windows XP Embedded | 2002-01-30 |
| Windows XP Media Center Edition | 2002-10-28 |
| Windows XP Tablet PC Edition | 2002-11-07 |
| Windows XP 64-bit Edition | 2003-03-28 |
| Windows Server 2003 | 2003-04-24 |
| Windows Small Business Server 2003 | 2003-10-09 |
| Windows XP Starter | 2004-08-11 |
| Windows XP Professional x64 Edition | 2005-04-25 |
| Windows Embedded for Point of Service | 2005-06-06 |
| Windows Server 2003 R2 | 2005-12-06 |
| Windows Vista | 2007-01-30 |
| Windows Home Server | 2007-11-04 |
| Windows Server 2008 | 2008-02-27 |
| Windows Small Business Server 2008 | 2008-08-21 |
| Windows Embedded Standard 2009 | 2008-12-14 2008-12-14 |
| Windows Embedded POSReady 2009 | 2008-12-14 2008-12-14 |
| Windows 7 | 2009-10-22 2009-10-22 |
| Windows Server 2008 R2 | 2009-10-22 2009-10-22 |
| Windows Server 2012 | 2012-09-04 |
| Windows 8 | 2012-10-26 |
| Windows 8.1 | 2013-10-17 |
| Windows Server 2012 R2 | 2013-10-18 |
| Windows CE | 1996 |
| AutoPC | |
| Pocket PC | 2000 |
| Pocket PC 2000 | 2000 |
| Pocket PC 2002 | 2002 |
| Windows 10 | 2016 |
| Windows 11 | 2021 |
| Windows Mobile | |

### Windows 10/11 and Windows Server 2016/2019/2022

| Name | Date of release | Update version |
| Windows 10 | 2015-07-29 | RTM (10240) |
| Windows 10 (1511) | 2015-11-10 | November (1511) |
| Windows 10 (1607) | 2016-08-02 | Anniversary (1607) |
| Windows Server 2016 | 2016-08-02 | Anniversary (1607) |
| Windows 10 (1703) | 2017-04-05 | Creators (1703) |
| Windows 10 (1709) | 2017-10-17 | Fall Creators (1709) |
| Windows Server (1709) | 2017-10-17 | Fall Creators (1709) |
| Windows 10 (1803) | 2018-04-30 | April 2018 (1803) |
| Windows Server (1803) | 2018-04-30 | April 2018 (1803) |
| Windows 10 (1809) | 2018-11-13 | October 2018 (1809) |
| Windows Server (1809) | 2018-11-13 | October 2018 (1809) |
| Windows Server 2019 | 2018-11-13 | October 2018 (1809) |
| Windows 10 (1903) | 2019-05-21 | May 2019 (1903) |
| Windows Server (1903) | 2019-05-21 | May 2019 (1903) |
| Windows 10 (1909) | 2019-11-12 | November 2019 (1909) |
| Windows Server (1909) | 2019-11-12 | November 2019 (1909) |
| Windows 10 (2004) | 2020-05-27 | May 2020 (2004) |
| Windows Server (2004) | 2020-05-27 | May 2020 (2004) |
| Windows 10 21H2 | 2021-10-05 | October 2021 (21H2) |
| Windows 11 (2021) | 2021-10-05 | October 2021 (21H2) |
| Windows Server 2022 | | |

### Windows Mobile

* Windows Mobile 2003
* Windows Mobile 2003 SE
* Windows Mobile 5
* Windows Mobile 6

### Windows Phone

| Name | Date of release |
| Windows Phone 7 | 2010 |
| Windows Phone 8 | 2012 |
| Windows Phone 8.1 | 2014 |

## Xbox Gaming

* Xbox system software
* Xbox 360 system software
* Xbox One and Xbox Series X/S system software

## OS/2

| Version | Date of release |
| 1 | 1987 |
| 1.1 | 1988 |
| 1.2 | 1989 |
| 1.3 | 1990 |

## Unix and Unix-like

* Xenix
* Nokia X platform
* Microsoft Linux distributions
* Azure Sphere
* SONiC
* Windows Subsystem for Linux
* Azure Sphere OS
* Azure Linux

## Other operating systems

* MS-Net
* LAN Manager
* MIDAS
* Singularity
** Midori
* Zune
* KIN OS
* Nokia Asha platform
* Barrelfish