In the pop-up window, click next to the game content section.
This error often arises because your game's data is mismatched between the language you are trying to use and the server. A solution that has worked for many is to copy the files from the old language folder (e.g., zone/russian or zone/german ) into your new zone/english folder, ensuring all required assets are present.
When Call of Duty: Modern Warfare 3 (2011) first launched, it was hailed as the explosive conclusion to the original Modern Warfare trilogy. Fast forward to today, and the game has seen a massive resurgence thanks to cross-platform compatibility on Xbox (via backward compatibility) and PC. However, thousands of players are running into a common problem: audio lag, mismatched subtitles, or simply getting stuck with a dubbed version of the game they didn't ask for.