I had to rebuild my XA65 farm because I deployed the Beta version of Rollup Pack 2 on my previous farm. As a result I was unable to upgrade to the Official Rollup Pack 2 when it was eventually released.
My new farm is complete. For the purpose of this question, lets assume I have the following Servers:
* Web Interface Server
* License Server
* Database Server
* Data Collector
* Published Desktop Host
* Published App Host
(All Servers are Win Server 2008 R2)
Users launch their Published Desktop Session. The published Desktop host has the Citrix Receiver Enterprise 3.4 installed. This launches upon startup. Any Role specific Apps are then published to the users Published Desktop.
On this new farm, if a user tries to launch a published app (hosted on the published app server) from within their published desktop session, the app does not launch and the following error is displayed
Then obviously the App does not launch.
If I check the event logs on all of the servers listed above, I find absolutely nothing.
I can however launch the app fine if I launch it outside of the Published Desktop (so direct from the client).
I have tested publishing an app and hosting it from the Published Desktop Host (notepad). I launch the Published desktop, then try launch the published Notepad. It launches fine. So I do not think the issue is related to the receiver.
Both hosts are effectively the same setup (same XenApp, same hotfixes & Rollup Packs etc).