Prototype 2 Failed To Save Data Fix Info

Open OneDrive settings (right-click the cloud icon in your system tray). Go to Settings > Backup > Manage Backup. Look for Documents. If it says “Documents are backing up,” click Stop backup. Why? OneDrive sees the game writing a file, tries to upload it, and locks the file mid-write. The game panics and deletes the save.

Fixing Prototype 2's data-loss issue required coordinated fixes across client, server, database, and infrastructure. Implementing idempotency, better error handling, timeouts alignment, and improved observability eliminated the failure mode and materially increased reliability. Applying these patterns proactively will reduce similar problems in future prototypes. prototype 2 failed to save data fix

This method works for 99% of users. We are going to force Windows to give the game a dedicated sandbox to play in. Open OneDrive settings (right-click the cloud icon in

Delete config.cfg from Documents\Activision\Prototype 2\. The game will recreate it. If it says “Documents are backing up,” click

Windows’ ransomware protection often blocks older games.