Open and navigate to Virus & threat protection . Select Manage ransomware protection . Click Allow an app through Controlled folder access .
: Add the game as an exception or temporarily disable this feature. Steps :
To ensure the game has the necessary permissions to write data: prototype 2 failed to save data fix exclusive
Navigate to your local user documents profile: C:\Users\[YourUsername]\Documents . Locate the folder named .
You tricked the game. The game thinks it is saving to your Documents folder, but you've created a "ghost door" (a symlink) that redirects the save to C:\ where Windows doesn't police permissions. Open and navigate to Virus & threat protection
This is the most common reason for the "Failed to Save Data" error on Windows 10/11. Windows Defender protects your documents from unauthorized changes, but it incorrectly flags Prototype 2 . Open the app.
If you use OneDrive, Google Drive, or Steam Cloud, These cloud services lock the save file while Prototype 2 is trying to write to it. The game waits 0.2 seconds, gets impatient, and gives up. Turn off cloud saves for this title manually in Steam properties. : Add the game as an exception or
Follow this definitive, step-by-step guide to permanently repair your save system. Run as Administrator
: Uncheck All Processors , check only CPU 0, CPU 1, CPU 2, and CPU 3 , then click OK . Manually Create the Save Directory