: Click "Allow an app through Controlled folder access" > Add an allowed app > Browse all apps .
: Navigate to your installation folder and select prototype2.exe to whitelist it. 3. Clear Old Save Conflicts
: In your Steam Library , right-click Prototype 2 > Manage > Browse local files .
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
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
How to Fix Prototype 2 "Failed to Save Data" on Windows 10/11
: Go to %UserProfile%\Documents\Activision\Prototype 2 .
: Search for "Controlled folder access" in the Windows Start menu.
Prototype 2 Failed To Save Data Fix | Recent — 2025 |
: Click "Allow an app through Controlled folder access" > Add an allowed app > Browse all apps .
: Navigate to your installation folder and select prototype2.exe to whitelist it. 3. Clear Old Save Conflicts
: In your Steam Library , right-click Prototype 2 > Manage > Browse local files . prototype 2 failed to save data fix
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
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 : Click "Allow an app through Controlled folder
How to Fix Prototype 2 "Failed to Save Data" on Windows 10/11
: Go to %UserProfile%\Documents\Activision\Prototype 2 . Clear Old Save Conflicts : In your Steam
: Search for "Controlled folder access" in the Windows Start menu.
