I have a very strange issue and I have spent way too long fighting this. I built out a Windows 2008 R2 server, installed Terminal Services and then installed Xenapp 6 Fundamentals. If you not family with this version of Xenapp it's basically Citrix's version of SBS. It is wizard driven and tries to dumb everything down and put everything on one box. I was able to install and publish several different programs but when I went to setup outlook for the first time as the administrator I went to control panel and tried adding an exchange account and the Add New Account locked up saying "Not Responding". No errors in the event log to go on either. I have tried connecting to multiple different exchange servers one in the office is a 2007, but I have multiple hosted Exchange servers that I tried as well and every time the Add new account screen locks up when I try and click "Check Name". Pretty much any time I try and setup or go into the mail setup on this machine it stops responding. I've attached a couple of examples. has anyone seen this before? Is this an issue with 2008 R2, or maybe Xenapp?