In our XenApp 6.5 HRP 4 Farm ,we had 1 server behaving oddly Somehow it always showed load of 20000 (licensing) Error during login: "Citrix XenApp is unable to retrieve the license server location" I tried a lot of things like recreating LHC Restarting server a couple of times Editing License server configuration using Role Manager However it Still kept staying on Load 20000 In the end i had to export the following Keys from a working XenApp Server and import it in the affected one , since the problematic server was missing these keys. [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Citrix\IMA] [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Policies\Citrix\IMA Hope this Helps