cannot connect to citrix xenapp server
"XenApp 5.0 - Error: ""Cannot Connect to the Citrix XenApp Server. Protocol Driver Error.""" When attempting to launch an application server, the following error message is displayed: Unable to launch your application. Contact your help desk with the following information: Cannot connect to the Citrix XenApp server. Protocol Driver error.. No ICA sessions can be established to the server. Solution 1. Complete the following steps on the server to recreate the ICA Listener: Open the Microsoft Management Console (MMC) Terminal Services Configuration, right-click the ICA-tcp listener, and click Delete. Click Yes. Expand the Action menu and click Create New Connection.