Crashing on Light Building

Hi Every time i try to rebuild lights for a scene unreal crashes, does anyone have experience with this or know what i can do to stop it or even what causes it? THanks

I’ve only had this happen in fairly large scenes. The solution has been to get more memory, or if that’s too expensive, to make your Windows Swapfile large enouigh to handle it. In my case I have 48 Gb RAM and and a 100 Gb swapfile.

i didn’t get this problem before the 4.19.2 update or windows 10.1 update, how about you ?