However, if you are a new user starting a career in 3D, do not download R18. Instead, subscribe to the latest Cinema 4D or use Blender. You will miss out on modern features like Global Symmetry, Scene Nodes, and advanced simulations.
Make sure you are using an R18-specific key. Keys for R19 or R20 will not work. Check your Maxon account under "Registered Products." Download Cinema 4d R18
If you're considering R18, it's likely for some of these standout features that became industry standards: However, if you are a new user starting