If the basics didn't work, the problem might be rooted in your Windows environment. Run as Administrator

Understanding the "why" helps prevent it from happening again after a major Windows update or game patch. Language Mismatches

If all else fails, a clean install is necessary. However, you must the AppData folder and the Steam installation folder after uninstalling to ensure no "poisoned" files remain behind for the new installation to find.

Right-click your game's .exe file in the installation folder, go to > Compatibility , and check Run this program as an administrator . This ensures the game has permission to write the missing .txt file if it needs to. Check for Bitdefender or Antimalware Interference

How to Fix "localization_dx11.txt Missing" in Total War Games

Steam will scan and redownload any corrupted or missing files. 2. Clear the AppData Folder