The error is a clear sign that you are dealing with a non-standard installation. For legitimate players, the solution is simple: verify your files. For those running alternative versions, the fix requires antivirus management and proper file placement.
To prevent your antivirus from deleting the file again the next time you launch the game, you need to tell it to leave your game folder alone. Virus & threat protection settings, click Manage settings Scroll down to Exclusions Add or remove exclusions Add an exclusion , and select the main installation directory for Watch Dogs: Legion 3. Re-Verify or Re-Extract Game Files Watch Dogs Legion Emp.dll
If you own the game on or Ubisoft Connect , use the "Verify Integrity of Game Files" option to redownload any missing original files. Note that emp.dll is not a legitimate Ubisoft file; if you have a retail version, a missing DLL usually indicates a corrupted install, and you should not search for emp.dll specifically. ⚠️ Security Warning Watch Dogs: Legion — Emp