Tried Corona 15, a new simple scene, a cube and a corona area light. From VFB, render works fine but when I start IR showing “renderer starting” and c4d hangs. After some time c4d force quit. Tried in C4D 2023 & 2025, in all same IR hangs. Any help to solve this issue. Thanks. …

Do I understand you right: You installed Corona 15 HF1, launched Cinema 4D and there was no problem at all Then you restarted your computer, launched Cinema 4D, and the problem was back Is that correct? So far I could find 3 similar reports. One of them was worked-around by disabling adaptivit…

yes, running c4d with corona 14, install 15 all works fine. I think better than 14. Restart computer with default render setting, slow material preview and vfb hang. disabling denoising, upscaling, tested already, does not works. single gpu and driver v610.62. Is there way to disable …

It keeps freezing on the first interactive render. It’s pretty frustrating because I can’t even get started with my work.

I think I sorted it but much slower compare to 14, material preview, vfb preiw, render start… around 15-20 sec slower. I hope it will be fixed. how sorted… after many ties, in installation, advance and check migrate data. I hope it will fix for you how has same issue. Thanks.

Hi, do you mean this option? Installation Process That’s strange, because this option transfers your previous license server options to the new installation. If you have already re-installed Corona multiple times without enabling this option, this should result in license server settings being rese…

That I did not deeply checked but this I know over 14 install 15 it works, but when restart system and 15 hangs. means some 14/15 mix files are running in background and and makes c4d hang. Cloud I tried earlier but it was not working, rest all same only checked migrate data and goes all fine. tha…

When you have some time, could you please check the following: Install Corona 15 with the cloud licensing option - check if you are getting the freezes Install Corona 15 with the license server option - check if you are getting the freezes Please share the results afterwards. Thank you in advance…

Title: Corona Interactive Rendering repeatedly resets and flickers, making IR unusable in Cinema 4D Hi, I am experiencing a persistent problem with Corona Interactive Rendering in Cinema 4D. Whenever I start Interactive Rendering, either in the Corona VFB or directly in the viewport, the render r…

Hi Maru, Tried both option. cloud licensing, works fine, faster material preview and material setting. Only vfb and render slower start in compare to 14, around 12-20 sec slower. license server, slower material preview and material setting not smooth, slider takes few sec. rest vfb and render same…

Finally, got the same issue. The only thing that changed is, I downloaded an asset from/via the Cosmos Browser… (last time was in April 2024). Now, it seems that the issue lies in ‘rendering task scheduler’. Because as soon as IV/IR VFB is stopped, the other ‘Material Previews’ commence. Otherwise…

Corona 15 C4D Hangs with start IR from VFB

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Corona 15 C4D Hangs with start IR from VFB

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