I have a solution! I've got the same problem till the last hour. I've updated 2 battleye .dll files in "Battleye" folder (I have 2 such folders, one in the root derictory and 2nd in "Expansion") and succssesfully joined the RU5(or mb 3) server from the first time! Download 2 files (client and server) from HERE Hope it will be helpful for somebody :) p.s. sorry for my English