If you have an older Inventor version (2018, 2019, or even a beta of 2020), uninstall it properly:
This is the critical section.
Select any additional components, such as the Content Center Libraries , if you require standard parts libraries. autodesk inventor 2020 install
The Autodesk Installer splash screen will appear. After a brief system check, the “Autodesk Inventor 2020 Setup” dialog opens. If you have an older Inventor version (2018,
Unlike modern “Always-Online” installers, Autodesk Inventor 2020 is typically distributed as a self-extracting executable or a set of ZIP archives. or even a beta of 2020)