We have just had to reinstall the OS on an SQL/webserver on the network. The computer does not log onto the domain controller just is on the same workgroup. Before, we were able to access the computers shares directly from other client's computers, now we get a username/password challenge. If we provide the valid credentials it works, however loses the credentials when the client logs his computer off. I have checked the permissions on the shares and has the "Everyone" account with full access.