Thx for the reply,
I can confirm that i use centrifydc 5.3.1 on Ubuntu 16.04.
So if i understand your answer, knowing i used express, i need to find a workaround for my user if i want them to avoid by the password promt ?
The goal is, for the end-user, to not have to write his credential on a shared file when he have access with his AD right.
I'm not sure were to begin with.