This error is a classic "handshake" failure. The game is looking for a specific text file that tells it how to display language and interface settings for DirectX 11, and for one of a few reasons, it’s hitting a brick wall.
Select > Installed Files > Verify integrity of game files . localization dx11.txt missing
Fix: Localization DX11.txt Missing or Not Found Error If you are trying to launch a game—most commonly Call of Duty: Black Ops 2 , Warframe , or certain older DirectX 11 titles—and you are greeted with an error shouting you aren’t alone. This error is a classic "handshake" failure
This error message typically appears when launching a (most commonly Grand Theft Auto V , but also other DX11-based titles like Red Dead Redemption 2 , Watch Dogs 2 , or some Unreal Engine games). Fix: Localization DX11
The "localization dx11.txt missing" error typically occurs when the dx11.txt file is not present in the expected location or is corrupted. Here are some common causes of this error: