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

Past ISA 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

Version	Most Recent Service Pack	Mainstream Support Ends	Release History
ISA Server 2000	SP1; Feb. 18, 2002	Mar. 31, 2006	Released: Feb. 2001
ISA Server 2000 Feature Pack 1		Mar. 31, 2008	Released: Jan. 2003
ISA Server 2004	SP1; Mar. 11, 2005	Sept. 30, 2009 (Ent. Edition Mar. 31, 2010)	Released: Sept. 2004 (Ent. Edition Mar. 2005)

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