the ATC window no longer opens, neither by the keyboard, nor by the ATC icon.
It opened before the installation of patch 1.9.3 but I don't know if there is a link.
Thanks for your help
using the bar at the top when in the airplane, find the area where you can reset the windows. I forget the exact verbiage. But I think it is the last menu item.
Hello and thank you for this answer.
I try well with the top bar of the simulator. All windows open except the ATC window and therefore the ground services window.