Is there a problem at 3CX that is causing the Firwall checker to fail today perhaps? I have installed several systems and when they were set up with 3CX V10, SP5 and I'm absolutely certain that when I stop the services and run the Firewall checked the test completed OK. I installed this machine with 3CX on Wednesday and checked the the Firewall worked and it was all OK. Today on site with a client I can't get the checker to work. I've now just remotely checked several other installations and they now don't pass the test either, yet they are good working systems with reliable inound/outbound calls. Can anyone confirm that it works today?