Having a 2015 Autodesk activation code is a unique situation in 2026. While Autodesk has officially discontinued support and activation services for the 2015 and 2016 versions as of , users with valid perpetual licenses can still theoretically use their software.
If you are trying to use an activation code you already have, or need to generate a new one for a reinstall, here is the essential guide to navigating this legacy process. Understanding Your 2015 License i have an activation code from autodesk 2015