when i start combat arms i get an error

i get an error when i try to start combat arms say it cant connecet to the server wat does this mean?? help plz

Free some space up on your os. You Cannot connect because it's like your internet stops really. Not enough to run it. Close some processe's out and retry. Restart computer re try. Um thanks if i helped

Un-install CA, delete all remaining other files from Nexon or Combat Arms folder on your C Drive then re-install.. and if that doesn't work.. then install it the old fashion way.