Updated: July 9, 2020 (February 2, 2004)

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

Windows 2000 Server and Windows 2003 Server are the only fully supported versions of Microsoft’s server OSs. Extended support for Windows NT 4.0 Server ends Dec. 31, 2004, and support other than security-related hotfixes requires a custom support contract.

Product

Current
Service Pack

Mainstream
Support Ends

Release
History

Windows NT 4.0 Server

SP6a: Nov. 30, 1999

Dec. 31, 2002

(paid support ends Jan. 1, 2005)

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

Mar. 31, 2005

Released: Feb. 2000

SP1: July 2000

SP2: May 2001

SP3: Aug. 2002

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