Prototype 2 Failed — To Save Data Fix [repack]

The "failed to save data" error in Prototype 2 is typically caused by Windows folder protection, permission conflicts, or issues with OneDrive syncing. Below are the most effective solutions to fix this issue: 1. Allow Through Controlled Folder Access Windows Security often blocks the game from writing to the Search for "Controlled folder access" in the Windows Start Menu and open it. "Allow an app through Controlled folder access" "Add an allowed app" and browse to the game's executable ( prototype2.exe ) in your installation folder (usually C:\Program Files (x86)\Steam\steamapps\common\Prototype 2 2. Run as Administrator (Global Settings)

OneDrive often hijacks the Documents folder where Prototype 2 tries to create its save data (Documents/Activision/Prototype 2). prototype 2 failed to save data fix

Set the .exe to "Run as Administrator" and enable Compatibility Mode (Windows 7/8). The "failed to save data" error in Prototype

Set Permissions: Right-click prototype2.exe, select Properties, and go to the Compatibility tab. Open Windows Security

  1. Open Windows Security.
  2. Go to Virus & threat protection.
  3. Click Manage ransomware protection.
  4. Turn Controlled folder access off (temporarily) or click Allow an app through Controlled folder access.
  5. Add Prototype2.exe (found in your Steam directory: Steam\steamapps\common\Prototype 2) to the allowed list.

Why Does Prototype 2 Fail to Save? The Root Causes

Before we dive into the fixes, it is crucial to understand that Prototype 2 uses an archaic save system. Unlike modern cloud-sync games, Prototype 2 relies on legacy Windows permissions and local storage. The error usually stems from one of three core issues: