It is set, so let's try to uncheck, simulate and ... It works !
So much power in such a little checkbox![Applause =D>]()
So, to resume :
Checking "Silently failed if destination can't be reached..."
forces the connection with local account (despite what is set in "network")
Unchecking it let the connection do correctly with the account provided in "network" tab.
My english isn't perfect but : it has nothing to do with that isn't it ?
Thank you Dave !
So much power in such a little checkbox

So, to resume :
Checking "Silently failed if destination can't be reached..."
forces the connection with local account (despite what is set in "network")
Unchecking it let the connection do correctly with the account provided in "network" tab.
My english isn't perfect but : it has nothing to do with that isn't it ?
Thank you Dave !