I've set up my first scene in experimenting with lighting and glass, and at one point I managed to have the Sun lamp object shine through the windows and cast intense shadow inside the room. This was exactly what I wanted. However, in trying to switch to 'Cycles' mode, my PC crashed. I lost those few hours of work. No big deal, except I can't make the transparency work again.
Emission objects seem to pass their light through the glass, but the Sun lamp I set up isn't. This is really frustrating! Image is attached for reference of nodes used (yes, it's Principled BDSF but I used a Glass node earlier and it still didn't work as intended.) I really would love some help