Hello, thanks for reading this, I'm sharing somes folder located on my Windows 7 Ultimate 64 for other workstation (XP and Vista). I made every step and everything is working very well for a couple of hours (4 to 6 hours), after that, the connection seems to be lost between XP and Windows 7. I still can ping 7, but I cannot get the share, a windows come up "cannot connect, you dont have rights...". Vista still can see 7 but weird things happen (some files cannot be reach). I have another Windows 7 workstation who dont have any problem to connect with the other one. The only thing to do to restore the share is to reboot 7 workstation. Also, I made a test on the 7 workstation with the command "NET SESSION \\xpcomputername /delete" to kill the session of one of the xp workstation who lost his network share and it worked ! His session have been reactivated. Now, my question, how to be able to get a stable network sharing without any drop ?