Internet Explorer 9 and Citrix Web Interface ICA Launch Failures

I ran into an interesting situation today with IE9 and WI that I felt I should share.  For those that have already read CTX129082, this goes along with that article. Troubleshooting this issue for a client, I followed the recommendations in the article including Disabling ActiveX filtering globally (or for individual site), adding the site to the Trusted Sites zone with Low security zones, and renaming the application/x-ica mime type in the registry.  Despite these changes, I was still finding the launch.ica file was being blocked: I was able to reproduce this issue in my lab and the issue has to [...]