If you are using a physical disc copy or a non-Steam digital version, verification isn't an option. You must restore the files manually. The critical folder is usually located at: C:\Program Files (x86)\Call of Duty Modern Warfare 3\zone\english
Navigate to: Steam\steamapps\common\Call of Duty Modern Warfare 3\main Delete localization.txt and relaunch — the game will regenerate it. Call Of Duty Modern Warfare 3 Could Not Load Localization
There are several potential causes of the "Could Not Load Localization" error in Call of Duty: Modern Warfare 3. Some of the most likely causes include: If you are using a physical disc copy
Change the game's language (e.g., to Polski or French) in your launcher settings. Allow the update to download and attempt to launch. Once it works, switch back to your preferred language. Run as Administrator : Right-click the game's executable ( ) in the installation folder, select Properties Compatibility , and check Run this program as an administrator Lower Desktop Resolution There are several potential causes of the "Could