Hi All Setting up a new WI 4.6 Server. Have turned on pass-through so a user does not have to enter there credentials. Users can run apps using full blown client and all works fine. (SSO etc) Have configured WI so that if a user does not have a Client they will download the Java client and run this instead. When they do this they get prompted to log onto the OS with a classic windows logon screen. I've played around with adding things to the Default.ica and can do things like turning seamless on and off and this does work for the java client. However when adding the SSO settings this seems to make no difference. EnableSSOnThruICAFile=On SSOnUserSetting=On Ideas what I'm missing. By the way if I disable the pass-through it works fine with java and full client Malcolm