Citrix Xenapp 4.5 Faulting application XTE.exe crashed

One of the Xenapp 4.5 (Previously known as Citrix Presentation Server 4.5) server in the farm is affected and all users that are connecting to this server will see their session hang permanently.

Users on other servers are not affected, and there's no problem when you try to RDP into this server.

You may experience the following error when logging into the server:

In the server's Event Log under Application, you will see this error:
Error 100, Event ID: 1000, Description: Faulting application XTE.exe, version 4.5.0.64631, faulting module mod_cgp.so, version 4.5.0.64631, fault address 0x0000b027.

(Exact error message may varies slightly depending on the version and the address of the fault)

The solution is to restart the Citrix XTE using services.msc. You may need to force terminate XTE.exe using Task Manager should the application refused to be terminated properly.

When the service is back up, you may need to force log off all those disconnected sessions as users may not be able to reconnect back to that previous session.