Box brush don't cast shadow

Hi,
I’m building a room, following instructions videos from youtube.

I don’t know why, but the ‘box brush’ boxes I placed are not casting any shadow. The ‘cast hidden shadow’ button is not in the ‘Lightning’ menu.

I know that few posts were published about this topic, but I couldn’t find any solution that I manage to implement my project.

Am I missing something? I’ll really appreciate a detailed answer (I’m really new with UE4).

Thanks!

A screenshot of my problem attached: the box marked with red isn’t casting any shadow, in opposed to the window object (marked with green)

Ever find a solution to this?

BSP brushes don’t cast shadows dynamically. You can convert it to a static mesh, or simply rebuild the lighting in the level and the shadows will appear. Note that you will have to rebake lighting if you move the brushes.

Just answered the question