If the NAT or Network Address Translation on your computer or console is not set to a less ideal restriction, you won’t be able to play online multiplayer with others. Most cases of party-related issues, be it on the PC or console (PS4, Xbox One, PS5, or Xbox Series X/S), are caused by strict or restrictive NAT. What are the causes for “unable to join party” error?īelow are the known reasons why “unable to join party” error may show up when on Black Ops Cold War. At this time, there’s no known universal fix for this error and exact solutions vary on the platform. Because there are multiple possible reasons for this problem, players are advised to perform a number of troubleshooting steps to fix it.
