Updated: July 9, 2020 (September 5, 2005)

Past Windows Client Versions

As managing vice president, Rob Helm covers Microsoft collaboration services and client software. His 25-plus years of experience analyzing Microsoft’s... more

Product	Current Service Pack or Version	Mainstream Support Ends	Extended Support Ends	Release History
Windows NT 4.0 Workstation	SP6a; Nov. 30, 1999	June 30, 2002	June 30, 2003	Released: July 1996 SP1: Sept. 1996 SP2: Dec. 1996 SP3: Apr. 1997 SP4: Oct. 1998 SP5: May 1999
Windows 2000 Professional	SP4; June 26, 2003 (An update rollup with additional critical fixes shipped June 2005)	June 30, 2005	2010 (est.)	Released: Mar. 2000 SP1: July 2000 SP2: May 2001 SP3: Aug. 2002
Windows XP Professional	SP2; Sept. 17, 2004	2008 (est.)	2013 (est.)	Released: Sept. 2001 SP1a; Sept. 4, 2002

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