How to Fix Prototype 2 "Failed to Save Data" on Windows 10/11
: Search for "Controlled folder access" in the Windows Start menu.
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
: 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
: Check the box for "Run this program as an administrator" and click Apply . 2. Configure Controlled Folder Access
: Click "Allow an app through Controlled folder access" > Add an allowed app > Browse all apps .
The most common cause is that the game lacks the necessary permissions to write to your Documents folder.
How to Fix Prototype 2 "Failed to Save Data" on Windows 10/11
: Search for "Controlled folder access" in the Windows Start menu.
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
: 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
: Check the box for "Run this program as an administrator" and click Apply . 2. Configure Controlled Folder Access
: Click "Allow an app through Controlled folder access" > Add an allowed app > Browse all apps .
The most common cause is that the game lacks the necessary permissions to write to your Documents folder.