Problem
You have successfully published applications on a XenApp 7.8 application server through a NetScaler but noticed that while you are able to log into the portal and view the published applications, you receive the following error when an application is launched:
Unable to launch your application. Contact your help desk with the following information:
Cannot connect to the Citrix XenApp server.Socket operation on non-socket
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Attempting to launch the desktop of the application server throws the following error:
Desktop Viewer
The connection to “Citrix XenApp” failed with status (Unknown client error 1110).
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Solution
One of the reasons why this error would be thrown is if you have not defined at least one STA server in the created NetScaler Gateway Virtual Server:
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Notice that the screenshot below states No STA Server under the Published Applications section:
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The error should no longer persist once a functioning STA server (the FQDN of your XenDesktop / XenApp Delivery Controller) is configured.
