In reality, was a component of the SecuROM copy protection system used by Rockstar Games at launch. It wasn't a "missing" file in the sense that the game forgot it; it was usually a sign that an antivirus program had quarantined it or that the SecuROM service hadn't installed correctly. For many players, the "story" went like this:
to automatically restore a legitimate version of the file if it's actually missing. Compatibility Mode : Right-click LaunchGTAIV.exe Properties > Compatibility , and set it to run for Windows XP (Service Pack 3) Are you currently getting a specific Fatal Error code (like RMN60 or WS10) along with this message? gta iv dfa.dll download