Prototype 2 Failed To Save Data Fix May 2026

: Navigate to your installation folder and select prototype2.exe to whitelist it. 3. Clear Old Save Conflicts

Windows Security sometimes blocks Prototype 2 from accessing your storage as a ransomware protection measure.

: In your Steam Library , right-click Prototype 2 > Manage > Browse local files . prototype 2 failed to save data fix

: Move any existing files to a backup folder on your desktop, then delete them from the original folder to let the game create a clean save. 4. Limit CPU Core Affinity

: Search for "Controlled folder access" in the Windows Start menu. : Navigate to your installation folder and select prototype2

: Check the box for "Run this program as an administrator" and click Apply . 2. Configure Controlled Folder Access

: Go to %UserProfile%\Documents\Activision\Prototype 2 . : In your Steam Library , right-click Prototype

If you're seeing the "Failed to save data" message in Prototype 2 , you're likely dealing with a permissions conflict or a core-affinity issue common to older PC ports running on modern hardware. This error can prevent you from starting a new game or progress from being recorded. 1. Run as Administrator

Prototype 2 often fails or crashes on modern CPUs with high core counts (typically more than 4 or 8 cores). Failed to save data message preventing play

: Right-click prototype2.exe , select Properties , and go to the Compatibility tab.