HDRI Renders in preview but not in final render I am having an issue with using an HDRI environmental image to light an indoor scene. It was working correctly when all of the sudden the shadows stopped showing in the render. 

I don't recall doing anything particular between one try and the other, except for adding a plane lamp to brighten up the scene a little bit. After this happened I deleted the plane of light just in case that was the reason but still no shadows. 

I leave my environment settings, my render settings, the preview of how the shadows should be and the render after hitting F12. 

One thing that is worth mentioning is that my graphic card ran out of memory for the first time. I solved this by switching to CPU and back to GPU Compute, but maybe it has something to do with the main problem. I leave also my system info and I have a NVIDIA GeForce GTX 960.
So, I was able to solve the problem by cleaning up the model. I deleted a lot of objects and now it renders correctly as usual. I guess it was a problem with my system and nothing with the model itself. Thanks again to everyone for the assistance and help! Have a great day