
If all else fails, this error is likely an issue on the game’s side and could require you to wait it out.

Try reinstalling the Multiplayer Pack or the Warzone 2 pack to potentially fix the error. Modern Warfare 2 allows you to install content in different parts, and some of this content may be corrupted - leading to the error code. On rare occasions, you may need to reinstall content packs to get around the 2901 error code. Then try launching into the game to see if this fixes the error. Close out of the game, check for updates, and install them if need be. Since this error happens more frequently when an update goes live, it’s possible you might’ve forgotten to install the latest update.

Make sure application and system have most recent updates Busy servers can often cause this error code to appear, but what can you do to fix it? This error code seems to appear more frequently when the game is updated, which leads to an uptick in player count. This disallows you from getting into the game and has caused lots of issues recently.
