Linking DLLs from a library to use in Launch In Editor

I am trying to Launch in Editor my game, that is using a third party plugin called Assimp.
I linked the libraries and included what was to include in game, and I put the DLLs needed in Binary/win64 and win32.
I can PIE, no problem.
I kept their original name (assimp-vc140-mt.dll in both 32 bit and 64 bit), but when I use Launch In Editor, it can’t launch saying that assimp-vc140-mt.dll is missing.
What am I missing here ?

I found it while digging really deep into the UE workings :

You need to put it in :


where GameName is the name of your game.

Hoping this will help other people in the future, not being able to launch in editor kinda sucks even though it’s not used much.

Doing this in 4.21 doesn’t work, the file gets deleted whenever I launch. Is there another workaround?