In this guide, we’re going to identify some of the possible causes that can lead to the Windows 8 protocol driver error, and then suggest possible solutions that you can use to try to resolve the issue.
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Symptoms Or Just Errors
When you try to start the software server, you usually receive the following error message:
“The application does not start. Contact support with the following information: Unable to activate the Citrix XenApp server. Protocol driver error. “
ICA sessions to the server cannot be established in the market.
Perform the following flights of stairs on the server to restore the ICA receiver:
Open the Microsoft Management Console (MMC) Services Terminal Configuration (TsConfig.msc), right-click this special ICA-tcp receiver and click Uninstall. Click Yes.
Expand the Actions menu and click New, then click New Connection. Click Next.
Continue using the wizard and adjust the options as desired. When an option appears for the assignedFor spectator names, enter ICA-tcp in the Name field.
Right-click the ICA-tcp listener and select Properties.
- Select the authorization outputs
and add the local account ctx_cpsvcuser.
Change the extended permissions and select only the Request and VC information check boxes in the Allow column.
- OK and close the MMC.
Restart the Print Spooler Print Service and Citrix Print Manager.
Click Next, then select Finish.
Remove App Controller as STA from NetScaler StoreFront and.
Make sure the application server is still open port 1494 and 2598 between NetScaler.
Cause Of The Problem
Session trust is enabled in the environment and cannot reach the ICA listener. The ICA listener no longer works and needs to be recreated. To confirm this, check the following:
- At the command line, run netstat -a. TCP port 2598 (Session Reliability) is listening on TCP, but port 1494 (ICA) will definitely appear in the list.
- checks the XTE logs in the C: Program Files (x86) Citrix XTE logs error.log folder. The message “Unable to connect to CGP tunnel destination (127.0.0.1:1494)” is repeated.
When starting the application server, the main error message is displayed:
“The registry won’t start. Contact support with the following information: Unable to connect to the Citrix XenApp server. Protocol driver error. “
Perform the following steps on the server to restore the current ICA listener:
Open the Microsoft Management Console (MMC) Terminal Services Configuration (TsConfig.msc), right-click the ICA-tcp listener and select Uninstall. Click Yes.
Expand the range of promotions and click Create, then click New Connection. Click Next.
Continue with the wizard and make the necessary settings. When you see a parameter that the auditor can name, enter ICA-tcp in the Name field.
Right clickgo to ICA-tcp-Showgoer and select Properties.
- Select the
Permissions tab and add the local ctx_cpsvcuser subscription.
Change the extended permissions and activate the checkboxes only for the request information and therefore the virtual links in the Allow column.
- OK and close the entire MMC.
Restart the Spooler Write and Citrix Print Manager services.
Click Next and then Finish.
Make sure loans 1494 and 2598 are open between NetScaler and the application server.
Session. Whether stability is enabled in the environment and it is likely that the connection to the ICA receiver cannot be established. The faulty ICA Is Listener also needs to be repaired. Please confirm this, please confirm the following:
- At the command line, run netstat -a. TCP port 2598 (Session Reliability) is listening on TCP, but port 1494 (ICA) is not listed.
- checks the XTE logs in the C: Program Files (x86) Citrix XTE logs error.log folder. It repeats “The logo cannot be connected to the CGP tunnel engine (127.0.0.1:1494)”.
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Stop the Citrix XTE Server service.In general, look for httpd. conf on the server.Open httpd.Find all instances that reference the old web IP address and change them to reflect the original IP address.Save fromchanges.Start the Citrix XTE Server service.
Protocol driver error / error 1046 is an issue where the client (receiver) is unable to connect to the server after running a great application. When this severe issue occurs, messages such as “Your version of Citrix Receiver does not support the encryption you have selected.”
Make sure 8080, 1494, 80, 2598, 443 or some manually assigned ports are open from this Citrix gateway to each CVAD server. To test, do Telnet from the Citrix gateway to each CVAD server on our own ports. Make sure you have the latest version of Workspace installed.