Call Of Duty Black Ops 3 English Localization.txt Link

If you have sourced the English Localization.txt file manually, it typically belongs in the root directory or the LPC folder of your installation.

Alternatively, in some modding setups or unpacked game versions, it may be in:

This error means the game engine cannot find or read the specified file in the root directory. This is often due to the file being missing, damaged, or corrupted. This can happen if an antivirus program quarantined it, the file was deleted accidentally, or an installation error occurred.