Spotlight Not Illuminating Inside Building I need to render this scene where the sunlight is entering though the windows and making shadows, I added a spotlight but it seems that the light is only working outside, I have no idea why. My windows have no glass yet.
Of note, I am using 2.79 because of my current hardware.



The weird circle you see in the windows is that i accidentaly duplicated the glass, i deleted the duplicated faces and correct the normals and now everything is looking goood
change spot strength to 1000

change glass material to : 

and most important change these: (blend mode and shadow mode)




and you will get :


to change blend mode in 2.79 checkout these answers:
Material Opacity in viewport?
How to see Cycle&#39;s material transparency in 3D View