Internet Security and Acceleration (ISA) Server 2004 SP2 provides the latest updates to ISA Server 2004 Standard Edition and Enterprise Edition, with increased security, reliability and stability. Microsoft strongly encourages customers to install SP2 on all computers running ISA Server 2004.

ISA Server 2004 SP2 can be installed directly on computers running ISA Server 2004 Standard Edition or Enterprise Edition, and includes:

• All software updates issued since ISA Server was released to manufacturing.
• Fixes for common issues reported by customers through Microsoft Product Support Services (PSS).
• Improved and more efficient communication between branch offices over the HTTP protocol, providing a foundation for the Microsoft Branch Office Solution.
• Improvements in the Cache Array Routing Protocol mechanism.
• New certificate alerts