What is the Support Lifecycle policy for “program add-ons”?
When you request support for add-ons (such as the Microsoft .NET Framework 1.1) to products that have reached the end of their lifecycle (such as Microsoft Windows NT Workstation 4.0), support for the add-on will not generally be available unless you have a custom support agreement in place. Therefore, make sure to verify the exact product support dates as posted on the Select a Product for Lifecycle Information site (products listed by Product Family) or the Support Lifecycle Index site.