THE NETWORK REQUEST IS NOT SUPPORTED

I HAVE INTALLED SAMBA IN LINUX MACHINE AND IN SMB.CONF I HAD MADE SECURITY = USER.IT IS NOT GIVING ANY PROBLEM, BUT WHEN I AM MAKING SECURITY= SHARE IT IS GIVING ME THE PROBLEM.
WHEN I AM CONNECTING IT THROUGH WINDOWS IT IS GIVING ME A PROBLEM ” THE NETWORK REQUEST IS NOT SUPPORTED.
PLEASE HELP ME OUT …

ABHINAV