Windows’ ransomware protection often blocks older games.
Modern Windows security often blocks legacy games like Prototype 2 from writing to the Documents folder. prototype 2 failed to save data fix
6.1 Immediate hotfixes (deployed within 24 hours) Windows’ ransomware protection often blocks older games
is notorious for crashing or failing tasks on modern CPUs with many cores (more than 4 or 8). This instability can sometimes interfere with the save process. Temporary Fix: While the game is running, open Task Manager , go to the tab, right-click prototype2.exe Set Affinity , and uncheck all but 4 CPU cores. Permanent Fix: Use a community mod like the Prototype2Fix on PCGamingWiki , which automates these stability fixes. 5. Clear Old Save Data This instability can sometimes interfere with the save
address administrative permissions or Windows security features that block the game from writing to your Documents folder Steam Community 1. Enable Administrator Privileges