First And Last Builds Of Windows Versions

Windows 1.0x
First Build: Windows Delt Release (08-1982)

Last Build: Windows 1.06 Service Pack 3 (11-1999)

Windows NT 1.x
First Build: Windows NT Omega Release (02-1983)

Last Build: Windows NT 1.6 Update 2 (08-1998)

Windows 1.1x
First Build: Windows 1.1 Pre-Alpha Release (03-1988)

Last Build: Windows 1.17 (07-1998)

Windows 1.2x
First Build: Windows 1.2 Pre-Alpha Release (05-1993)

Last Build: Windows 1.25 Service Pack 2 (06-2003)

Windows 2.x
First Build: Windows 2.00 Alpha Release (08-1986)

Last Build: Windows 2.31 Service Pack (12-2001)

Windows NT 2.x
First Build: Windows NT 2.0 Pre-Alpha Release (04-1987)

Last Build: Windows NT 2.3 Service Pack 4 (10-2005)

Windows 3.0
First Build: Windows 3.0 Build 2 (Alpha) (08-1989)

Last Build: Windows 3.07 Build 1300 (SP 1) (11-1996)

Windows NT 3.x
First Build: Windows NT 3.0 Build 4 (Alpha) (06-1990)

Last Build: Windows NT 3.82 Build 2065.1633 (SP 3) (10-2007)

Windows 3.1
First Build: Windows 3.1 Build 10 (Pre-Beta) (02-1990)

Last Build: Windows 3.18 Build 3581 (Post-RTM/Update) (11-2000)

Windows For Workgroups (All)
First Build: Windows 3.1 FW Build 12b (Pre-Beta) (01-1992)

Last Build: Windows 3.51 FW Build 3105 (SP 2) (12-2001)

Windows NT 3.1
First Build: Windows NT 3.1 Build 100 (December 1991 Alpha/Pre-Beta) (12-1991)

Last Build: Windows NT 3.15 Build 1035 (SP 2.1/SP 2 Update) (07-1997)

Windows 3.2
First Build: Windows 3.2 Build 125 (Pre-Beta) (06-1994)

Last Build: Windows 3.25 Build 685 (Post-RTM) (10-1997)

Windows NT 3.2
First Build: Windows NT 3.2 Build 140 (Alpha/Pre-Beta) (09-1994)

Last Build: Windows NT 3.251 (SP 4) (12-2002)

Windows 3.3
First Build: Windows 3.3 Build 205 (Beta) (11-1995)

Last Build: Windows 3.33 Build 1000 (Post-RTM) (02-1997)

Windows 95
First Build: Windows 95 (As Codename Chicago) Build 10 (December 1992 Test Release) (12-1992)

Last Build: Windows 95 Build 2300.150 (SP 3/OSR 5.1) (05-2000)

Windows 4.x
First Build: Windows 4.0 (Codename Lizard) Build 34 (Pre-Alpha 1) (06-1993)

Last Build: Windows 4.5 Build 4211.23 (Service Pack 1) (11-2003)

Windows 96
First Build: Windows 96 (Codename Washington) Build 69 (April 1994 Test Release) (04-1994)

Last Build: Windows 96 Build 3250.361 (OSR 3.0) (08-2002)

Windows NT 95
First Build: Windows NT 95 (Codename New Chicago) Build 53 (March 1994 Test Release) (03-1994)

Last Build: Windows NT 95 Build 4360.162 (Service Pack 5) (05-2003)

Windows NT 4
First Build: Windows NT 4.0 (Codename Shell Update Release) Build 956 (Alpha) (02-1995)

Last Build: Windows NT 4.51 Build 4361.25 (Service Pack 6 Second Security Rollup) (11-2006)

Windows 97
First Build: Windows 97 (Codename Nashville) Build 130 (Pre-Delt 1) (03-1994)

Last Build: Windows 97 Build 1253 (RTM) (06-1997)

Windows NT 96
First Build: Windows NT 96 (Codename New Washington) Build 980 (Pre-Beta) (01-1995)

Last Build: Windows NT 96 Build 2410.126 (Service Pack 4.5) (12-1999)

Windows NT 97
First Build: Windows NT 97 (Codename New Nashville) Build 1000 (Alpha) (11-1995)

Last Build: Windows NT 97 Build 4036.36551 (Service Pack 8c SRU 3) (03-2008)

Windows 98
First Build: Windows 98 (Codename Project Revolution) Build 8 (Pre-Pre Delt) (02-1993)

Last Build: Windows 98 Build 2006.12 (Service Pack 3b) (12-2006)

Windows 5.x
First Build: Windows 5.-5 Build 23 (Pre-Beta) (06-1994)

Last Build: Windows 5.99 Build 15293.2135 (Service Pack 7 SRU 3 Update) (08-2015)

Windows 99
First Build: Windows 99 (Codename Pre-Millenium) Pre-Delt (03-1989)

Last Build: Windows 99 Build 2500 (Service Pack 1) (04-2000)

Windows NT 5.x
First Build: Windows NT 5.-1 Build 1250 (Pre-Alpha 1.-1) (11-1996)

Last Build: Windows NT 5.555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555 Build 62851.2341563 (Service Pack 26z SRU 8) (12-2043)

Windows 100
First Build: Windows 100 (Codename Dallas) Build 1651 (Pre-Beta) (12-1997)

Last Build: Windows 100 Build 2700.2 (SP 2) (04-2001)

Windows 2000
First Build: Windows 2000 (Codename Millenium NT) Build 1423 (Alpha) (05-1996)

Last Build: Windows 2000 Build 2195.9823 (SP 7a) (06-2007)

Windows Whistler
First Build: Windows Whistler Build 2104.05 (Alpha) (09-1999)

Last Build: Windows Whistler Build 2400.6514 (SP 4 Update) (12-2009)

Windows Neptune
First Build: Windows Neptune Build 4500.1 (Pre-Beta) (06-1999)

Last Build: Windows Neptune Build 5826.2517 (SP 3) (11-2007)

Windows Odyssey
First Build: Windows Odyssey Build 4525.2 (Pre-Beta) (07-1999)

Last Build: Windows Odyssey Build 6043.2513 (SP 3 Update) (08-2010)

Windows Triton
First Build: Windows Triton Build 4550.3 (Pre-Beta) (07-1999)

Last Build: Windows Triton Build 6942.0562 (SP 4) (07-2009)

Windows XP
First Build: Windows XP Build 2001.1025 (Pre-Alpha) (12-1998)

Last Build: Windows XP Build 2600.9923 (SP 5) (01-2013)

Windows Server 2003
First Build: Windows Server 2003 (Codename Server XP) Build 2003.424 (Pre-Alpha) (12-1998)

Last Build: Windows Server 2003 R4 Build 3790.6527 (RTM) (11-2014)

Windows Longhorn
First Build: Windows Longhorn Build 2999.9999 (Alpha) (04-2000)

Last Build: Windows Longhorn Build 5004.63152 (SP 2 Update) (10-2017)