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Move the game from an external drive to your main C: drive.
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Right-click prototype2.exe in your Steam library files and select . prototype 2 failed to save data fix exclusive
Older games often require a legacy Windows environment to handle file management properly.
Because Prototype 2 was originally coded for older systems like Windows 7, modern OS security frameworks view its data storage requests as a threat. This guide details the to resolve this storage conflict and restore full saving functionality. Move the game from an external drive to your main C: drive
To fix the error on PC, you must grant the game write permissions to your local drive or bypass Windows system directory locks. This frustrating error completely locks you out of saving manual progress, forces autosave failures, or traps you in an endless loop at the main menu title screen.
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Exclusive Fix 2: Run as Administrator and Configure Security
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