When using Project Configuration Tool (PCT) in Server mode and connecting from a remote PCT client, it is not possible to transfer backups or exports. The transfer gets stuck, and a complete reboot is required to start using the project again.
EcoStruxure Building Operation
Building Operation Project Configuration Tool (PCT)
In the "Settings for Project Configuration Tool" the Notification and Listening port defaults to 0.
Port 0 means that PCT will ask the OS for an available port. But if network policies prevent PCT from communicating using that port, PCT cannot detect that.
In "Settings for Project Configuration Tool" Change the port number for the Notification port and Listening port to a port that is available to use.