I've yet to see this ever working through an ICA file. Here's what I think it should look like; I have EnableSSOnThruICAFile=On in the appsrv.ini in the WFClient section For this trial, we are using PS4.0 and XP on desktop with 9.1 client. Pass through works fine via PN. Can anyone see where I'm going wrong? [WFClient] Version=2 TcpBrowserAddress=xxx.xxx.xxx.xxx SSOnUserSetting=On EnableSSOnThruICAFile=On [ApplicationServers] LiveLink Explorer= [LiveLink Explorer] Address=LiveLink Explorer InitialProgram=#LiveLink Explorer ClientAudio=Off Compress=On TWIMode=On DesiredHRES=640 DesiredVRES=480 DesiredColor=4 TransportDriver=TCP/IP WinStationDriver=ICA 3.0 UseLocalUserAndPassword=On ScreenPercent=0 Thanks Russell Russell Robertson Skibo Technologies The Software Centre Aberdeen Science & Technology Park Balgownie Drive, ABERDEEN AB22 8GU T: +44 (0)1224 355250 E: russell.robertson@xxxxxxxxx <mailto:russell.robertson@xxxxxxxxxx> W: www.skibo.com <http://www.skibo.com/> Microsoft Certified Partners Citrix Solutions Advisers Northern Business Star Awards Finalists 2005