Select and browse to your Prototype 2 installation folder (usually C:\Program Files (x86)\Steam\steamapps\common\Prototype 2 ). Select prototype2.exe to whitelist it. 2. Disable OneDrive Syncing
5.1 Race condition on client
5.4 Transaction scope and connection pool exhaustion prototype 2 failed to save data fix
Right-click the OneDrive icon in your taskbar > > Manage Backup . Uncheck the Documents folder so it stays local to your PC. Advanced Troubleshooting Failed to save data message preventing play Select and browse to your Prototype 2 installation
C:\Users\[YourUsername]\Documents\Activision\Prototype 2\ prototype 2 failed to save data fix
The data save failure in Prototype 2 has been resolved via Build v0.2.1-hotfix. The root causes (serialization logic and file pathing) have been addressed, and rigorous testing confirms that data persistence is now stable. The team is proceeding with development on Prototype 3 with updated protocols to prevent recurrence.