This is the most common fix to bypass folder permission issues. Steam Library , right-click Prototype 2 , and select Browse local files Right-click prototype2.exe and select Properties Compatibility Run this program as an administrator (Optional) Check Run this program in compatibility mode for and select Steam Community 2. Allow Through Controlled Folder Access
Ultimate Fix: How to Resolve Prototype 2 "Failed to Save Data" Error
Prototype 2 Failed to Save Data Fix: Exclusive Solutions for PC prototype 2 failed to save data fix exclusive
Prototype 2 frequently crashes on startup if your CPU features more than 4 or 8 logical threads. You can constrain the game's core utilization using a simple command line trick:
If you have applied all the file permission fixes and the game still fails to save (or crashes during saving), your processor might be too fast for the game engine. Prototype 2 struggles with CPUs that have more than 4 or 8 logical processors. How to Limit CPU Affinity via Task Manager This is the most common fix to bypass
Uncheck and select only CPU 0, CPU 1, CPU 2, and CPU 3 . Click OK , return to the game, and try saving.
The "Failed to save data" error in Prototype 2 is a frustrating, but fixable, issue. You now have the exclusive, definitive guide to solving it. Start with the standard fixes like running the game as an administrator. If the problem remains, take control by resetting your save folder. And for the most stubborn cases on modern hardware, the "Prototype 2 Ultimate Fixer 3000" is your ultimate weapon. You can constrain the game's core utilization using
row.applyChanges(newData); row.version = row.version + 1; db.update(row); commit();