Warhammer 40K Space Marine 2 launch came with a lot of bugs ranging from crashes during cutscenes to endlessly getting stuck on the Loading Resources or Joining Server screen. One such issue that appears when you launch the game is the 'connection lost' message with the error code 4.
Fix Warhammer 40,000 Space Marine 2 Error Code 14 Connection Lost Error on PC
Understandably, this can be especially annoying if you want to play this long-awaited title with friends. Here are all the troubleshooting tips that might help you fix this issue and play the multiplayer mode.
First of all, check your internet speed (Fast.com can be helpful), as a slow connection on your end could be the reason you are seeing this error. If you are using wifi, switch to an ethernet cable. You can also try using your mobile hotspot and see if you can log in. If so, the problem is with your internet provider. Contact them for a solution and then try to join the game.
If that is not the case here, please check out the other possible reasons and their solutions below.
