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Fixed in 2019.1

Fixed in 2018.2, 2018.3



Found in



Issue ID




Unity freezes when importing a specific .FBX file

Asset Importers


How to reproduce:
1. Create a new project
2. Drag cylinder.FBX file into the Project

Expected result: cylinder.FBX is imported into Unity
Actual result: The import freezes

Reproducible on: 2018.2.0a5, 2018.2.9f1, 2018.3.0b3, 2019.1.0a2
Not reproducible on: 2017.4.12f1, 2018.1.9f2, 2018.2.0a4

Comments (2)

  1. 76dc4b54a110175bd3a6a4daa1cc736f?d=mm


    Apr 16, 2019 18:07

    Actually, scratch that. I set up a simpler test case and it worked ok. It just turns out it's taking a very very long time. Took well over an hour to import a scene geometry fbx file. Maybe it's doing something complex like generating shadow UVs. It has got past it and onto audio files now though. I should point out that CPU usage was barely registering, which is why i thought it had frozen.

  2. 76dc4b54a110175bd3a6a4daa1cc736f?d=mm


    Apr 16, 2019 17:07

    I still get this issue with multiple FBX files exported from 3DS Max 2013 (using FBX exporter binary 2012 & 2013) in Unity versions 2019.1.0f1 and 2019.2.0a11. I can't load my projects in these versions.

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