Why is there no light passing through the window? I have attached a screen shot of no light passing through the window. The light strength is high, and the glass material I think is good. Why is there not a pinch of light passing or traveling inside the room. In the image the window glass is all black. What is missing in my nodes, so that light can travel inside the room?
You have to add a bit to the glass shader to make light pass through it, like it would through a window.
Try using this node setup, works really well for architectural glass: