Before we jump into the download, it helps to understand why this error occurs. Unlike older games that installed all languages by default, modern titles—especially those distributed via Steam, Epic Games, or Ubisoft Connect—often employ a "smart download" feature.
Because .lang files are essentially data containers, some overzealous antivirus software flags them as "Unrecognized." If you trust the source, add an exception for the Assassin's Creed Syndicate folder in your antivirus settings, and re-extract the file. Before we jump into the download, it helps
If you're still having trouble, providing more details about your platform or the specific issue you're facing might help tailor the solution better. Before we jump into the download