ICA Desktop And Application Sessions Disconnect Immediately After Successful Launch
Article ID: CTX236306
Updated On:
Description
- ICA Desktop sessions or Applications disappear immediately after successful launch.
- The sessions state changes to "Disconnected".
- In Task Manager you see two instances of wfshell.exe for each disconnected ICA session.
Environment
Caution! Using Registry Editor incorrectly can cause serious problems that might require you to reinstall your operating system. Citrix cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk. Be sure to back up the registry before you edit it.
Resolution
Remove the extra entry for cmstart.exe from the registry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\AppSetup on the VDA
CMSTART.EXE is responsible for starting WFSHELL.EXE which loads the virtual channels and CLTMGR.EXE which is the client manager. Since there were two entries for cmstart.exe, it started two wfshell.exe instances for each session with each sending a EUEM (End User ExperienceMonitoring channel, related to HDX) bind request to the client with the second bind getting rejected resulting in a closed connection.
Problem Cause
There were two cmstart.exe entries present under registry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\AppSetup.CMSTART.EXE is responsible for starting WFSHELL.EXE which loads the virtual channels and CLTMGR.EXE which is the client manager. Since there were two entries for cmstart.exe, it started two wfshell.exe instances for each session with each sending a EUEM (End User ExperienceMonitoring channel, related to HDX) bind request to the client with the second bind getting rejected resulting in a closed connection.
Issue/Introduction
ICA Desktop And Application Sessions Disconnect Immediately After Successful Launch
Additional Information
Purpose of CMSTART command
https://support.citrix.com/article/CTX983798
Application Launch Error: "The Citrix server is unable to process your request to start this published application at this time."
https://support.citrix.com/article/CTX132243
https://support.citrix.com/article/CTX983798
Application Launch Error: "The Citrix server is unable to process your request to start this published application at this time."
https://support.citrix.com/article/CTX132243
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