Question Unity 5.6.0f3 crash while launching (gfxdevice)

A customer who is using Unity v 5.6.0f3 is facing issues when launching Unity. (see the Unity Editor.log below)

There is no evident reason for this crash, same hardware for another user and Unity doesn't crash.

C:/Users/user/Documents/WorkLink/Projects/user

Audio: FMOD Profiler initialized on port 54900

Loading GUID <-> Path mappings...0.000141 seconds

Loading Asset Database...0.000044 seconds

AssetDatabase consistency checks...0.000333 seconds

Initialize engine version: 5.6.0f3 (497a0f351392)

GfxDevice: creating device client; threaded=0

Crash!!!

We have tried updating graphics drivers and windows updates but still crashes. Any other ideas/things to try?

Updating to different Unity version isn't an option since our product only works with this version of Unity.