We have a Citrix XenApp 5.0 server running on Windows 2008, and today we moved ISPs so our IP addresses changed. The IP addresses have propagated, the XenApp server is running, and internally we can connect to the server, choose an app, and have it streamed without issue. Externally we are only able to authenticate to the server and choose an app, but the app never launches in the client.
I'm guessing there's a hand-off between the part of XenApp that authenticates a user and shows what apps they can launch, and the part that does the app streaming, and that second part is hard-coded to use an the old ip address. Any ideas why this could be happening?