Since the original code has been tampered with, these versions are prone to frequent crashes, lack critical updates, and may perform poorly compared to the official software.
Let’s cut through the noise. Maxon (the developer of C4D) does not distribute portable copies.
If your goal is to run it from an external drive without installing it deeply into the system OS:
The idea is seductive: carry a USB stick with a fully functional, licensed, and installation-free version of C4D that you can plug into any computer (school lab, office, internet café) and start rendering immediately.
While the allure of a "Cinema 4D free license portable" version is understandable—offering the power of a professional tool without the cost or installation hassle—it is largely a myth in the legitimate software world.