You have to change a register : HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\Services\Netlogon\Parameters\requiresignorseal >> set this to 0 -- Matthieu EXBRAYAT Maitre de Conference / Associate Professor LIFO, Universite d'Orleans, France Tel: +33 2 38 41 72 34 Fax: +33 2 38 41 71 37