This is a known issue but if you use it like that it should work: rcon -H SERVERIP -p 25575 -P YOURADMINPASSWORD info   You will get the same error but you can pair it with timeout like that to circumvent that (if you use timeout 1 it should also be enough) : timeout 2 rcon -H SERVERIP -p 25575 -P YOURADMINPASSWORD info