Updated: July 11, 2020 (June 14, 2004)

Exchange 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

This chart outlines life-cycle support dates and initial release and service pack histories for Exchange Server versions 5.5 and 2000. For a description of Microsoft’s software life-cycle phases, including “Mainstream” and “Extended,” see the chart “Support Life-Cycle Phases“.

Product

Mainstream
Support Ends

Extended Support Ends

Current
Service Pack

Release
History

Notes

Exchange Server 5.5

Ended Dec. 31, 2003

Dec. 31, 2005

SP4: Nov. 7, 2000

Released: Dec. 1997

SP1: Aug. 1998

SP2: Dec. 1998

SP3: Sept. 1999

Fees for nonsecurity hotfixes waived through 2004.

Exchange Server 2000

Dec. 31, 2005

Dec. 31, 2010

SP3: July 18, 2002

Released: Nov. 2000

SP1: June 2001

SP2: Dec. 2001

Requires Windows 2000 and Active Directory. Cannot run on Windows Server 2003; can work in Windows Server 2003 domains.

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