: In Device Manager , try disabling HID-compliant consumer control devices if you experience lag or crashes alongside save failures.
Right-click the .exe and select Run as Administrator . Disable Controlled Folder Access: Go to Windows Security > Virus & threat protection . Click Manage ransomware protection .
For a 100% permanent resolution, the community has developed a fantastic modding tool that fixes the core code of the game, making manual tweaks unnecessary.
How to Fix the "Failed to Save Data" Error in Prototype 2 (PC Guide)
To help narrow down the exact cause for your setup, let me know: Which are you running (Windows 10 or 11)? prototype 2 failed to save data fix exclusive
Your security software might be a silent blocker.
: Navigate to your Documents folder, right-click the Activision (or Prototype 2 ) folder, and ensure "Read-only" is unchecked.
Corrupted or missing installation files can disrupt the internal saving mechanics of the game. Launch and navigate to your Library . Right-click on Prototype 2 and select Properties . Choose the Installed Files (or Local Files ) tab. Click Verify integrity of game files .
Prototype 2 Failed to Save Data Fix: Exclusive Guide to Resolving Saving Issues : In Device Manager , try disabling HID-compliant
To ensure we get this working perfectly for your specific setup, could you tell me:
If you need to manually back up or clear old, corrupted data, you can find your saves here: Failed to save data message preventing play
Unlike typical "disk full" errors, the Prototype 2 save glitch is often a logic error within the game’s file handling. On PC, it is frequently caused by the game struggling to interface with the Windows user profile path—specifically if your Windows username contains special characters or spaces.
A popular community fix exists—the "Prototype 2 Launcher Mod" by Emuse—which automatically applies many of these fixes. Click Manage ransomware protection
Click Allow an app through Controlled folder access , click Add an allowed app , browse your files, and select prototype2.exe . Method 3: Manually Create the Save Directory
Locate and select the prototype2.exe file to grant it saving privileges. Verify Game Files (Steam Users)
If your user profile settings changed during a Windows update, your entire Documents directory might have been set to "Read-Only" mode. Go to your C:\Users\YourUsername directory. Right-click the folder and select Properties .