transparent asset from blender

hi guys, I have been having an issue with my 3D models made in blender and animated in mixamo.
Here´s the deal…when I export my 3d model (no rig) as fbx from blender and import it to unity, it shows its material well, however, when I upload it to mixamo for rigging and download it from mixamo and import it into unity, my object becomes transparent…I open the mixamo downloaded object in blender and I can see that mixamo changes the “blend mode” from opaque to “alpha blend” making the object transparent. I changed the blend mode back to opaque and saved the mixamo downloaded fbx as a different file name. I open it in unity and still the image shows transparent “even thou, the blend mode says opaque” I have tried getting rid of the material but it still does the same thing…whats the issue here? I don´t think the issue is with the 3d model itself since the model shows well in unity before uploading it to mixamo…it´s after I download it from mixamo that this issue shows up…I need help, please.

blender image : Captura de pantalla 2023-12-07 095959.png - Google Drive
unity image : Captura de pantalla 2023-12-07 095718.png - Google Drive

thanks a lot!

Just don’t depend on the materials in the FBX. Transferring them back and forth means each system is trying to make them compatible with their needs, not your game’s needs. Just make the materials you want in Unity, and assign them to your model in Unity.

I already did, in fact, when I import my 3d model into unity with NO material at all, it still shows transparent…I have tried recalculating normals, backface culling and flip normals in blender, and still it shows transparent…

I have exactly the same problem and I have tried all the proposed solutions, but I can-t seem to be able to fix it. In fact, I found out that if I import the FBX without armature, the materials show fine, but when I import it with its armature is when I have the transparency problem. (see picture below)
9818223--1411032--TOT sample image.jpg

Can anyone help with this?
Thanks in advance.