Server 2025
Released: 2024, January 11
Editions: Essentials, Standard, Datacenter, Datacenter for Azure
11
Released: 2021, October 5
Editions: Home, Pro, Pro for Workstations, Pro Education, SE, Education, Enterprise
Server 2022
Released: 2021, August 18
Editions: Essentials, Standard, Datacenter, Datacenter for Azure
Server 2019
Released: 2018, October 3
Editions: Essentials, Standard, Datacenter
Server 2016
Released: 2016, October 12
Editions: Essentials, Standard, Datacenter, MultiPoint Premium, Storage Standard, Storage Workgroup
10
Released: 2015, July 29
Editions: Home, Pro, Education, Enterprise, Enterprise LTSB, Pro Education, Pro for Workstations
Server 2012 R2
Released: 2013, October 18
Editions: Foundation, Essentials, Standard, Datacenter, Storage Essentials, Storage Standard, Storage Workgroup
8.1
Released: 2013, October 17
Editions: Pro, Enterprise, RT
8
Released: 2012, October 26
Editions: Pro, Enterprise, RT
Server 2012
Released: 2012, September 4
Editions: Foundation, Essentials, Standard, Datacenter, Storage Standard, Storage Workgroup
Home Server 2011
Released: 2011, April 6
Server 2008 R2
Released: 2009, October 22
Editions: Standard, Enterprise, Datacenter, Web
7
Released: 2009, October 22
Editions: Starter, Home Basic, Home Premium, Professional, Ultimate, Enterprise
Server 2008
Released: 2008, February 27
Editions: Web, Standard, Enterprise, Small Business Server, Datacenter, HPC, HyperV Core, Foundation, Storage
Home Server
Released: 2007, November 4
Vista
Released: 2007, January 30
Editions: Starter, Home Basic, Home Premium, Business, Enterprise, Ultimate
Fundamentals for Legacy PCs
Released: 2006, July 8
Server 2003 R2
Released: 2006, March 5
Server 2003
Released: 2003, April 24
Editions: Standard, Enterprise, Datacenter, Web, Storage, Small Business Server, Compute Cluster
XP
Released: 2001, October 25
Editions: Home, Professional, Media Center, Tablet PC, Starter, Embedded
Me
Released: 2000, June 19
2000
Released: 2000, February 17
Editions: Professional, Server, Advanced Server, Datacenter Server, Powered (Embedded)
98 SE
Released: 1999, May 5
98
Released: 1998, May 15
NT 4.0
Released: 1996, August 24
Editions: Workstation, Server, Server Enterprise Edition, Terminal Server, Embedded
95
Released: 1995, July 14
Editions: Retail, OSR1, OSR2, OSR2.1, OSR2.5
NT 3.51
Released: 1995, May 30
Editions: Workstation, Server
NT 3.5
Released: 1994, September 21
Editions: Workstation, Server
NT 3.1
Released: 1993, October 24
Editions: Workstation, Advanced Server
3.1x
Released: 1992, April 6
Editions: 3.1, Workgroups 3.1, 3.11, Workgroups 3.11, 3.2 (Simplified Chinese only)
3.0
Released: 1990, May 22
Editions: 3.0, 3.0a, 3.0a with Multimedia Extensions
2.1x
Released: 1988, May 27
2.0
Released: 1987, September 8
1.0
Released: 1985, November 20