Wrong user using single sign on

using single sign on with IIS, when open my dashboard, it detects the wrong user.
I have 2 account, my classic user without admin rights (“user”), and another, with admin right (“user.admin”)
My active windows session is “user”, but this is my “user.admin” username that is detected when opening the dashboard with Chrome.
My chrome process is executed with my ‘user’ account.

This is weird.