How to fix the A player that your platform denies error in Call of Duty: Modern Warfare 2 and Warzone 2.0

An error has been occurring more frequently as players team up to combat the hectic gunplay of Call of Duty: Modern Warfare 2 and Warzone 2.0. An error message that reads "A player that your platform denies permission to play with you has joined the game" may show when you try to invite other players into the game. Do you want to leave the lobby? Here are a few short workarounds for a variation of this that occasionally happened in the original Warzone.

Quick fix for the "player that your platform denies" error

The simplest and quickest solution to this problem is to have a different person host the game. The developer should hopefully work out this crossplay and other issues, but for now, the quickest solution is to try to let someone else in the party host the team. The entire team should leave the party and return to the main menu, where they can choose a new host.

Related: How to fix the We Need Permission to Continue error

If it doesn't work, try turning the title on and off again to restart the program. See if the problem still exists after reformatting the party by completely exiting the application, restarting it, and checking again. There is just one option, which is unfortunate if it goes on.

In Call of Duty: Modern Warfare 2, how do I turn off cross-talk?

The best course of action if the aforementioned remedy didn't help you is to completely disable crossplay. This can be done in Warzone 2.0 or Call of Duty: Modern Warfare 2's options menu. After choosing settings, go to Account and Network, then find Crossplay and make sure it is turned off. This problem seems to originate from the fact that this option is only accessible to PlayStation 4 and PlayStation 5 users. This is the best workaround until the developer releases a fix.