Ok, now the issue is more clear.
The solution is to replace the Volume SpotLight with a normal Area Light with reduced dimensions, and add the new Spotlight Distribution node in the Distribution pin:
E1DDD0BA-E110-4BA9-9F9B-6E5511382F54.jpeg

Here is an example scene:
SpotDistribution.zip

ciao ...

Thanks for answering so quickly.

I think the error is there, but in light settings I do not get the light medium options. Also if I get into the nodes I get the nodes without links, and even if I delete them I still have the same problem. Here I leave you screenshots of the ambient occlusion (Sorry ...

Hello everybody.

First of all I'm sorry, I can't put this post where it belongs but it just lets me open a new post in this group.

My problem is that when I use octane inside cinema 4d and put a spotlight, the beam from that spotlight leaves a black spot in the ambient occlusion, I understand ...