Right-click on (it is recommended to do this for all three: Singleplayer, Multiplayer, and Zombies). Select Properties > Installed Files . Click Verify integrity of game files .
The most frequent cause is a simple text mismatch in the game's root folder.
If you are using a repack or specific regional version, the game may include a dedicated tool to fix this. Open the game's main installation folder. Look for a folder named _Language Switcher . Open the English folder inside it. Right-click on (it is recommended to do this
Wait for Steam to detect and download any missing language assets. 3. Use the Built-in Language Switcher
Right-click the game in Steam and change the to something else (e.g., Polish). Allow the download to start (let it reach ~1-2%). Change the language back to English . The most frequent cause is a simple text
This often forces Steam to correctly recognize and download the cmn-root.english sound banks. 5. Manual Folder Placement (For Advanced Users)
Sometimes the language selection menu "bugs out" and requires a manual refresh to trigger the download. Look for a folder named _Language Switcher
Navigate to your Black Ops 2 installation directory (e.g., C:\Program Files (x86)\Steam\steamapps\common\Call of Duty Black Ops II ). Locate the file named localization.txt . Open it with Notepad.