Convertion problem

[DJFox11]

I would not use the Windows Model Viewer, it's a terrible piece of software in my opinion. Both .DAE and .OBJ formats do not include textures within the model file itself. In the case of .DAE, it looks for textures wherever they are referenced in each material. .OBJ, on the other hand, uses a .MTL file to reference the textures and their locations. If no textures are present, the model will appear blank or white, as shown in your attachment. To fix this, you need to ensure that the textures are included with the model and properly set up for each material.

Hope this helps!
DJ~