OK that sort of made a progress. I have a few network interfaces (wireshark, VPN) and seems like QB looking at the wrong network interface in order to communica...
I wish someone actually read my messages. All of the possible "from support manual" solutions has been tried. None of them work: clean install, clean all the Qu...
Thank you for your help Mich_Sbut unfortunately, none of bulletpoints are applicable, as i don't have an issue with the company file, my Quickbooks won't start ...