Check the box that says . Click Apply and then OK . 3. Change Compatibility Mode Settings
The "Failed to save data" error in Prototype 2 on modern Windows systems (10/11) is typically caused by insufficient folder permissions or the game's inability to handle high CPU core counts. You can resolve this through administrator tweaks, security settings, or a specific local account workaround. Primary Fixes : prototype 2 failed to save data fix exclusive
The "Failed to save data" error in Prototype 2 is a notorious legacy issue, typically caused by permission conflicts with modern Windows security features (like OneDrive and Controlled Folder Access) or compatibility bugs with high-core-count CPUs. The Definitive Fix: Administrator & Permissions Hierarchy Check the box that says
: Press the Windows Key, type Windows Security , and press Enter. Change Compatibility Mode Settings The "Failed to save
Exclusive Fix 2: Run as Administrator and Configure Security
. To resolve this, you must ensure the game has proper write access to its save directory. 1. Configure Controlled Folder Access