I have exactly the same issue here
added .exes to firewall, turned off antivir (AVG) - still the same error.
edit:
reinstalled game, this error apperas: http://prntscr.com/cy6e0w
running as administrator doesn't help
found solution:
once you click on dbgolauncher, in your folder will create "updater.exe" file as well - just click on it as administrator and voila worked for me