Hello! I’m trying to render a scene with different types of light, and for some reason Rectangular Lights don’t appear when I render. The rest of lights are ok, but all rectangular lights seems invisible. U have check the visible option in details, but nothing happens. I need help please!! 
Unfortunately, this basic feature is not implemented in UE. You have to make a surface with the same dimensions of the Rect Light, with an Emissive material attached…
Oh really ?? It’s just for rendering? Because I can see it properly in the editor
You’ll have to be more specific about what isn’t rendering with the rect light. Is it the lighting itself, as in it doesn’t appear to do anything to the scene in the rendered output? Or is there no source associated with where the light is placed? Gab’s suggestion is related to there being no source with any light actor.