On a Windows 2003 terminal server with Citrix XenApp 4.5, group policy is used to define intranet zone mappings. When looking at all the available methods of testing group policy, including Group Policy Results in GPMC and also when running regedit on the terminal server and checking the relevant key HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\windows\CurrentVersion\Internet Settings\ZoneMapKey everything seems to be fine. But IE does not pickup the settings. The panel in the settings dialog is empty, and the servers are not recognized as part of intranet. What can be the reason?