Dealing with the "Failed to Save Data" error in Prototype 2 is a classic headache for modern PC players. Since the game is an older title, it often struggles with newer Windows security features and file permission structures. 1. The "Administrator" Fix (Most Common)
C:\Users\<YourUsername>\AppData\Local\Activision\Prototype 2\Saved Games~/Library/Application Support/Activision/Prototype 2/Saved GamesNote: Don't touch slot-A.bin or slot-B.bin—those are your actual story progress saves. Deleting the profile file forces the game to generate a fresh, clean configuration. 4. Create a Local Administrator Account prototype 2 failed to save data fix exclusive