Hi fellas, I know this is а painful topic already ,but can you give me some tips how can I and could i fix this issue? PC platform the best score that i had is reach to Istanbul.Then i started to get Network Error /again/- Not enough players to join the session. We both disabled any antivirus programs,Firewalls , opening additional ports etc. We Re-started the Co-op championship several times and our best score is Istanbul without getting Connection lost to each other. I tried almost all and I feel like I'm smashing my head off a brick wall. It's really frustrating not to be able to play the game as it is intended. IF anyone have come across such problems and therefore succeed, please share your experience. Regards.