Steam will be forced to queue a download for the missing English localization files. Method 2: Verify Game Files If Steam thinks the files are there but they are corrupted: Open the game in Steam. Navigate to the Installed Files tab. Click Verify integrity of game files .

In Black Ops 3 , text strings (menu items, button labels, subtitles, error messages, etc.) are not hardcoded into the game’s executable. Instead, they are stored in external localization files. The english_localization.txt file contains key-value pairs where each line maps an internal string ID to the English text displayed in the game.

To help troubleshoot further, let me know you are playing on (Steam or a different launcher) and the exact error message you see on your screen.

The file is a critical component for players who find themselves with a version of the game that isn't in their native language—or for those dealing with the dreaded "missing localization file" error.

, the game is forced to search for and load English assets from the Essential for Modding:

It is the centerpiece of unofficial "English language packs" shared on community forums like Steam Community Error Handling:

Mod creators can edit this file to:

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.

Installing custom zombies maps or custom localization mods can overwrite it. How to Create or Restore the File Manually