lighting problems, sun isn't working on render I am trying to create an indoor enviroment. I made two windows, added a sun and rotated it so that it could go throug the window and lighten the sofa and part of the wall.
But I don't see the sun light anywhere.

I checked on settings and is not invisible to the render but it just not reflecting any light. The only light I get is from the image background.

This is the picture with sun 


and this is when I delete the sun


Can anybody tell me please why is this?

Thanks in advance
Your sun is working fine but the size is huge, it is making shadows very soft and blurry.

Reduce the Size parameter to something below 0.1 units if you want hard shadows.