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

Past Windows Server Versions

As managing vice president, Rob Helm covers Microsoft collaboration and content management. His 25-plus years of experience analyzing Microsoft’s technology... more

Product	Current Service Pack	Mainstream Support Ends	Extended Support Ends	Release History
Windows NT 4.0 Server	SP6a; Nov. 30, 1999	Dec. 31, 2002	Dec. 31, 2004	Released: July 1996 SP1: Sept. 1996 SP2: Dec. 1996 SP3: Apr. 1997 SP4: Oct. 1998 SP5: May 1999
Windows 2000 Server	SP4; June 26, 2003 (rollup package with selected patches released Jun. 2005)	June 30, 2005	2010 (est.)	Released: Mar. 2000 SP1: July 2000 SP2: May 2001 SP3: Aug. 2002
Windows Server 2003	SP1; Mar. 2005	2009 (est.)	2014 (est.)	Released: May 2003

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