As Inventor 2020 is an older version, Autodesk has changed its licensing model from "Serial Number" to "Named User." If you are installing this on a fresh machine, you must ensure your Autodesk Account or Network License Server is configured to support legacy versions, or you may encounter activation errors. Guide: Installing Autodesk Inventor 2020 1. Pre-Installation Checklist Before running the installer, verify that your hardware and operating system meet the requirements. Inventor 2020 is resource-intensive, and skipping these checks is the leading cause of crashes post-install. Mucar Activation — Code Exclusive