When attempting to launch an application server, the following error message is displayed:

No ICA sessions can be established to the server.

Solution 1

Complete the following steps on the server to recreate the ICA Listener:

1. Open the Microsoft Management Console (MMC) Terminal Services Configuration (TsConfig.msc) , right-click the ICA-tcp listener, and click Delete. Click Yes.

2. Expand the Action menu and click Create New Connection. Click Next.

3. Continue through the wizard and configure the desired settings. When the option to name the listener appears, type ICA-tcp in the Name field.

4. Click Next and then click Finish.

5. Right click ICA-tcp listener and click Properties.

6. Select the Permissions tab and add the local account ctx_cpsvcuser.

7. Edit the advanced permissions and select only the Query Information and Virtual Channels check boxes under the Allow column.

8. Click OK and close the MMC.

9. Restart the Print Spooler and Citrix Print Manager services.

Solution 2

Remove App Controller as STA from NetScaler and StoreFront.

Solution 3

Problem Cause

Session Reliability is enabled in the environment and it is unable to contact the ICA Listener. The ICA Listener is no longer functioning and must be recreated. To confirm this, check the following:

• From the Command Prompt, run the command netstat -a. The TCP port 2598 (Session Reliability) is LISTENING but TCP port 1494 (ICA) is not displayed in the list.
• Examine the XTE logs at "C:\Program Files (x86)\Citrix\XTE\logs\error.log". The message "Unable to connect to the CGP tunnel destination (127.0.0.1:1494)" is repeated.

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