If you have tried everything else—reinstalling, running as admin, or disabling antivirus—this user-verified method from a Reddit thread has proven successful where others fail.
If standard permission fixes fail, these deeper methods often resolve persistent save corruption or storage device errors:
, and check "Run this program as an administrator". Crucially, click "Change settings for all users" prototype 2 failed to save data fix exclusive
For years, this error has plagued players on PC and consoles, turning Sgt. James Heller’s quest for revenge into a test of patience. But what exactly causes this save corruption, and how can you fix it without losing your progress? Let’s dissect the virus and find the cure.
If you have any mods or software installed that might be interfering with the game: If you have tried everything else—reinstalling, running as
If the primary fixes don't work, try these other community-recommended troubleshooting steps:
Ultimate Fix: How to Resolve Prototype 2 "Failed to Save Data" Error James Heller’s quest for revenge into a test of patience
Select Prototype2.exe (or prototypef.exe depending on your version).
Knowing these details will help me pinpoint the exact fix for your PC. Share public link