To fix the unable to load persistent data error on Battlefield 2042, players will need to do the following troubleshooting steps depending on their platform.
For console users, you will need to turn your console off and unplug it. Leave it off for around two to four minutes. After time has passed, plug the console back in, turn it on, and get into the game.
For PC users, you will want to clear your cache for the game. On Origin, you will want to locate the program data folder and delete every folder but local content.
Now for Steam users, you will want to locate the download menu and click clear cache. After running the steps above, try launching the game, and once you are back in Battlefield, try joining a server.
If you make it through, it means the fix worked, but if you are still encountering issues, about all you can do is wait. The persistent data error is most likely being caused by too many players overloading the servers.
Because of this, it's most likely an issue the developers can only fix. So we will need to wait for a patch or for the servers to stabilize. We also recommend to keep trying to join servers, as sooner or later, the game will load after a few attempts.
For more on Battlefield 2042, we at Pro Game Guides have you covered.