Beginning January 1, 2012, Autodesk will have formally ceased support of the Microsoft Windows Vista Operating System for all new (and upgraded versions) of its products and services released in 2012.
Currently shipping versions and previous versions of our software (delivered prior to January 1, 2012) will continue to be supported on this operating system.
Currently shipping versions and previous versions of our software (delivered prior to January 1, 2012) will continue to be supported on this operating system.
via
Autodesk – Microsoft Windows 7 and Windows Vista Compatibility – Microsoft Windows Vista Support FAQ
Pretty funny that XP is still supported… that OS has some legs!