Citrix protocol driver error xenapp

 · Contact your help desk with the following information: Cannot connect to the Citrix XenApp www.doorway.ruol Driver error” A quick google search brought up several relevant articles to why this message might appear. However in our case, turns out someone powered off a set of Citrix Test Servers that the ICA files were pointing www.doorway.ruted Reading Time: 50 secs. Symptoms or Error. After upgrading one of the servers to XenApp VDA , users with Receiver version are unable to connect. Older receiver versions work fine, also upgrading to solves the issue. Receiver connects fine to VDA The issue only occurs when connecting through NetScaler.  · We are getting this error on all computers, including the ones that are remote. The internet works. And the help lines are closed. Unable to launch your application. Contact your help desk with the following information: Cannot connect Estimated Reading Time: 2 mins.

Occasionally, a server will be unable to make new EDT/UDP connections and get a "Protocol Driver Error" until the server is restarted. I have attempted to restart almost every service on the systems having the issue and none seem to correct the issue. Since the RDP service is tied to the UDP port, I believe this is where the issue lies. Verify that ports , , 80, , or any other manually assigned ports are open from the Citrix Gateway to each CVAD server. To verify, run a telnet from the Citrix Gateway to each CVAD server on the ports in question. “Unable to Launch your application, Contact your help desk with thefollowing information: Cannot connect to the Citrix XenApp server. Protocol Driver error”.

Cannot connect to the Citrix XenApp server. Protocol driver error. The first seems to have some events associated with it on the gateway that say the XML. Protocol Driver Error. A5: This is a generic Citrix error message related to connectivity to the XenApp Server and, thus, the inability to run applications. The. Cannot connect to the Citrix XenApp www.doorway.ruol Driver error. Hello. We have a client that used to connect to our XenApp farm to run.