You need to download or copy the equivalent English files ( localized_en_iw07.iwd ) from a valid English installation.
: Moving the English "Koncept" files into the folder and overwriting existing files. Manual Language Swapping : In some cases, users also need to manually add the localized_english_iw07.iwd files to the "main" folder if they are not already present. Steam Community Context and Reception Player Feedback Call of Duty WWII English Files koncept
If the game still opens in a foreign language or shows errors, try verifying the integrity of the files: Right-click in Steam. Go to Properties -> Installed Files (or Local Files). Click Verify integrity of game files . 3. Manual English Files Replacement (Konzept/Fix) You need to download or copy the equivalent