I have a running in the background program that shows a notification window using Python tkinter. When this window opens, its icon appears on the taskbar and the user can right click on this icon > xxx.exe > and start the program over and over again. How can I prevent this?

If it is in the system tray, the user can easily terminate this program. I don’t want the user to terminate the program easily. Because this warning window is critical. But of course there is the possibility to go into the task manager and close it.