Ariellendera, its worked.

Still i need find what is precise problem, because before 4.3.2018 all work fine include FF14. Only after 4.3.2018 FF14 got this "connecting to data center" and stop work problem. No change in antivirus (Avast) firewall (Avast and Comodo) browser i use latest Firefox 64bit. Only my cable modem is really old piece of hardware (soon change for top modem my IPS offer)