PC
Error pops up almost every time I try to enter The Tower, also often in The Farm. Game itself works fine, but I have to try to enter The Tower for 20 times in a row before it finally lets me in just for a few minutes, then it kicks me out with the same error.
Ports are open.
UPnP is on.
Antivirus and firewall are off.
Internet connection is stable ~50 Mbps.
Game files validation didn't help.
Re-installation didn't help.