Blender Plane Extrude Import has missing outside Walls in UE4


i created walls in Blender with Plane Extrude but after importing the .FBX into UE4 it won’t show the outside walls.

How can i fix it?

Hmm. Without knowing much about Blender (3DS user myself), I’d assume it is to do with flipped faces. Have you checked that all normals are unified inside Blender?

In editmode, try selecting all the vertices by pressing a and then use ctrl + n to make the normals consistent. You can check which way the normals are facing by pressing n, searching for “Mesh Display” and under “normals” toggling the one for faces.