If you use Microsoft OneDrive, it may be automatically backing up your Documents folder. When Prototype 2 tries to save, OneDrive locks the file to upload it, causing the save to fail.
Q: Can I still play Prototype 2 if I encounter the "failed to save data" error? A: Yes, but you may lose your progress if the issue persists. Follow our fix to resolve the issue and continue playing without data loss.
Open File Explorer and navigate to C:\Users\[YourUsername]\Documents\ .
If you're experiencing issues with Prototype 2 failing to save data, you're not alone. This problem can be frustrating, especially if you're in the middle of a critical mission or have made significant progress in the game. In this guide, we'll explore the possible causes of the issue and provide a step-by-step guide to help you fix the problem.
Prototype 2 was not built for modern CPUs with 8 or more cores. This can cause memory leaks and engine instability, directly impacting the game's ability to execute save scripts. Launch Prototype 2 . Press Ctrl + Shift + Esc to open the . Go to the Details tab and find prototype2.exe . Right-click the process and choose Set affinity .
Open the folder and create a new folder inside it named Prototype 2 .
Prototype 2 Failed to Save Data Fix: Exclusive Solutions for PC (2026 Updated)
The most common culprit is Windows Defender's built-in anti-ransomware feature, known as Controlled Folder Access. It restricts older applications from writing files directly to your default Documents folder, which is exactly where Prototype 2 attempts to build its save directory.
If the standard permission fixes fail, creating a fresh local Windows account often resolves deep-seated permission conflicts that prevent saving. :
Look for the folder. (If it does not exist, manually create a folder named Activision , and inside it, create a folder named Prototype 2 ). Right-click the Activision folder and choose Properties . In the General tab, look at the bottom for Attributes .