Citrix Receiver Not Launching Applications? Here’s Why!

citrix receiver not launching applicationsA typical Citrix environment can be so complex. What might seem like a simple problem in the Citrix Receiver can turn out to be very hard to troubleshoot. For instance, if a user’s Citrix Receiver is not launching applications, you need to consider a number of factors.

A lot of the solutions involve editing the Windows Registry—a high-risk operation that, if done wrong, can have serious consequences.

Misconfigured LogoffCheckSysModules registry value in HKLM

When published applications don’t launch and the user doesn’t see any error message, then admins don’t see any entry that stands out in the Event Log of your Citrix server. One of the places you’ll want to check is the value of LogoffCheckSysModules. This is found in the registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI

The value of this registry key SHOULD NOT contain the executable for the application the user is attempting to launch. If the name of the executable in question is there, create a backup of the registry key and then remove the executable’s name from the key.

Application launch attempts in a published desktop get disconnected

When you attempt to launch a published application from a published desktop, that action may disconnect the session of the published desktop. That’s because Citrix receiver is configured by default to reconnect all open sessions upon launch.

To make the application launch succeed, you need to change the value of the WSCReconnectMode key from 3 to 0 in one of the following:

Application not given enough time to launch

Some launch-related issues occur because certain applications need more time to launch. There are two registry key values you can change that might remedy the problem. Both are in the registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI

The first is LogoffCheckerStartupDelayInSeconds. Try setting this initially to 10 seconds and then increase by 10 seconds until 600 seconds.

The second one is ApplicationLaunchWaitTimeoutMS. Try setting this initially to 10,000 milliseconds and then increase up to 30,000.

Notice that, for these two registry key values alone, much time can be spent trying out different values. And these are just some of the many possible causes why Citrix Receiver is not launching applications.

Avoid Citrix receiver not launching applications issues for good with Parallels RAS

To avoid Citrix Receiver application launch issues for good, shift to Parallels® Remote Application Server (RAS). Parallels RAS is a virtual application and desktop delivery solution with a much simpler architecture. Complex issues like those mentioned above are eliminated from the client-side and can usually be addressed by simply reinstalling or restarting the Parallels Client. In addition, users can also switch to the HTML5 Client until any issue is resolved.

Don’t just take our word for it—try it out yourself. Download your 30-day Parallels RAS trial now and say goodbye to all your application launch issues.


References

Geekworldinc | http://geekworldinc.blogspot.com/2014/02/

Lowell Vanderpool [YouTube video]| https://youtu.be/_U78iAem3uo

Carl Stalhood | https://www.carlstalhood.com/virtual-delivery-agent-vda-7-15-ltsr/

Work Anywhere | http://www.waw.raidghost.com/index.php/news-it-waw/blogueurs-follow/1363-virtual-delivery-agent-vda-712

Poppelgaard | https://www.poppelgaard.com/author/admin/page/110