Turn off or add prototype2.exe to the "Allow an app through Controlled folder access" list. Fix 3: Address OneDrive Interference
If the error persists due to a corrupted user profile or OneDrive syncing issues, creating a local administrator account can resolve it. prototype 2 failed to save data fix exclusive
If standard permission fixes fail, creating a fresh local account often bypasses deep-seated registry or permission errors. Turn off or add prototype2