http://serverfault.com – I have two computer, the first one is the server (so WinXP) with a shared folder granted for user "test" and this is out of domain, it is just in WORKGROUP. The second computer is a client computer (WS2012) in domain and i would like to access directly to the shared folder of the server without prompting username/password. I tried to add a "test" user (with the same password) in localuser of the (HowTos)