Exactly what have you tried?  Have you watch this tutorial:        https://forums.unraid.net/topic/53172-windows-issues-with-unraid/page/4/?tab=comments#comment-741282   Have you gone through this thread (start with page 6 and work backwards)?        https://forums.unraid.net/topic/53172-windows-issues-with-unraid/   I am also assuming that you are trying to access shares when you get this message.  Are your shares Public, Secure or Private?    F