To join the Modern Warfare multiplayer game, all you need to do is to press the A🧲 or X button on the second controller depending on what system (PS4 or Xbox One) you are on. Step 5.🧲 The second player will prompt to sign in to an Activision account to start playing the COD Modern Warfare split🧲 screen.

Clear the Cache of Your Console. Another common reason for the Call of Duty Modern Warfare Multiplayer🧲 not working error is the corrupted cache data. In this case, you can try clearing the cache files on your🧲 PC or console to fix the issue.