If you need legitimate access to Inventor on different machines, Autodesk does offer a

If Autodesk could make Inventor portable, they would sell it as a "USB Enterprise Key." They don't, because they cannot.

The idea of a "portable" Autodesk Inventor—a version that runs directly from a USB drive without installation—is a frequent topic for designers who need to work across different workstations. However, because Autodesk Inventor relies heavily on system registry keys and extensive local program data, a true "portable" version is not officially supported by Autodesk.

There is no official "portable" version of Autodesk Inventor released by Autodesk. While you may find third-party "portable" versions online, these are often unauthorized, "cracked" versions that pose significant security and performance risks. What Does "Portable Autodesk Inventor" Mean?