Arduino cannot run because it could not create a folder to store your settings

Hi,

I have this message, on a users session (no-admin) on school-network. Arduino is ok on admin session !

FYI, os : seven 64bits; the folder "Application Data" is redirected to their "home" on the server (hidden folders) .
I put everything the rights on arduino file !
under user session, Arduino not run with "run as administrator"

Help me please