Download [better] Modern Warfare 3 English Language Pack

To download the English language pack for Call of Duty: Modern Warfare 3 (2023), you must use your platform's launcher (Steam, Battle.net, or console menus) to trigger the download of the necessary localization files. How to Download and Install the English Language Pack

If you legally own MW3 on Steam, do not download random DLL files. Do this instead: Download Modern Warfare 3 English Language Pack