As a failsafe, forcing the game to run in a compatibility mode instructs the OS to treat the application with relaxed security restrictions.
The "failed to save data" error in Prototype 2 on PC is typically caused by Windows folder protection, permission issues, or modern hardware conflicts (high CPU core counts). Primary Fixes Allow Through Controlled Folder Access prototype 2 failed to save data fix
The most common cause of this error is Windows Defender blocking the game from writing to your Documents folder. As a failsafe, forcing the game to run
: Move any existing files to a backup folder on your desktop, then delete them from the original folder to let the game create a clean save. 4. Limit CPU Core Affinity : Move any existing files to a backup
Right-click the .exe , select , and go to the Compatibility tab. Check Run this program as an administrator .