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

  Charts & Illustrations

Past Services for Unix Versions

Rob Helm by
Rob Helm

As managing vice president, Rob Helm covers Microsoft collaboration and content management. His 25-plus years of experience analyzing Microsoft’s technology... more

At the conclusion of the mainstream support phase, Microsoft typically stops offering free incident support (per warranty) and free non-security-related hotfixes, and no longer issues new service packs. However, the company continues offering free security-related hotfixes and fee-based support options. For more information, see the chart “Product Support Life-Cycle Phases“.

Product Mainstream
Support Ends
Services for Unix 2.0 Mar. 31, 2005
Services for Unix 3.0 Sept. 20, 2007


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