I can provide specific system adjustments based on your setup. Share public link
The PC port of Prototype 2 has a memory management flaw that affects save writing. The community discovered that forcing the game to use a different audio wrapper fixes the save bug. This sounds insane, but it works for many users.
If you cannot load a save, start a New Game , skip the initial cutscenes, then immediately exit to the Main Menu. You should now be able to load your existing save.
Steam Cloud Synchronization can sometimes loop and corrupt the local save profile, preventing the game from overwriting existing data. prototype 2 failed to save data fix
(Alternative) If you want to keep the feature on, click Allow an app through Controlled folder access and add prototype2.exe to the allowed whitelist. 3. Verify Steam Cloud Conflicts
The most common reason for save failures is a lack of write permissions. Forcing the game executable to run with administrative privileges bypasses standard user account restrictions.
Look for settings labeled , Exceptions , or Whitelists . I can provide specific system adjustments based on
If the quick fixes failed, your issue is likely permission-based or related to Windows security virtualization.
Create a new local Windows Administrator User Account using purely standard English alphanumeric characters (e.g., "Gamer123"). Log into that Windows profile to play the game. 7. Change the Game's CPU Affinity (Core Limit)
Alternatively, you can temporarily toggle "Controlled folder access" to while playing. 3. The "New Game" Workaround This sounds insane, but it works for many users
If is turned on, click Allow an app through Controlled folder access . Click Add an allowed app and select Browse all apps .
Click and browse to your prototype2.exe (usually in Steam\steamapps\common\Prototype 2 ).
Below is a step-by-step troubleshooting guide to resolve the issue and get your game saving correctly. 1. Run the Game as an Administrator
Microsoft OneDrive automatically syncs your Documents folder to the cloud. If OneDrive syncs at the exact millisecond Prototype 2 tries to write a save file, a file-sharing conflict occurs. The game gets locked out, resulting in a failed save. Click the OneDrive cloud icon in your Windows taskbar tray. Click the gear icon ().