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

Past 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 lifecycle support dates as well as initial release and service pack histories for Exchange Server versions 5.5 and 2000.

Product

Current
Service Pack

Mainstream
Support Ends

Release
History

Notes

Exchange Server 5.5

SP4: Nov. 7, 2000

Ended Dec. 31, 2003

General Availability: Dec. 1997

SP1: Aug. 1998

SP2: Dec. 1998

SP3: Sep. 1999

Extended support ends Dec. 31, 2005. Fees for nonsecurity hotfixes waived through 2004.

Exchange Server 2000

SP3: July 18, 2002

Dec. 31, 2005

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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