Already done everything in that link. Full reinstall of windows, steam and the game. Had the chaps over at the server host work all day trying to fix it from their end and help me fix what might be wrong on my end. Still getting this error message.
We get this message whenever we try to join someones elses game. My son and I can join eachothers localy hosted multiplayer games, but not join games of friends in other countries. Also we have rented a dedicated server now, and we keep getting the same error message.
output_log.txt
output_log_clean.txt