Hi, Have you seen this article http://support.citrix.com/article/ctx116373. I can vouch that the certificates components work as expected. You must also configure all the prerequisites for WI Pass-through. Thanks Pete From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Steve Snyder Sent: Thursday, 8 January 2009 10:40 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] netscalers and smartcards (CAC) - who's using them? and what did you have to do to get the WI to come up properly? We're trialing a NS 8.1 in our DMZ - the VPN tunnel connects and it starts to load the WI site but the smartcard (CAC) authentication just doesn't fly. Citrix is scratching their heads.