(not recommended for long-term security).
Optional but recommended: Repeat these exact steps for your Steam executable ( steam.exe ) if the issue persists. 2. Disable Windows Controlled Folder Access
Right-click the on your desktop (or the prototype2.exe file in your installation directory). Select Properties . Navigate to the Compatibility tab. Check the box next to Run this program as an administrator . Click Apply and then OK . Launch the game and attempt to save. 2. Configure Windows Controlled Folder Access
Here is a comprehensive, step-by-step guide to fixing the Prototype 2 save data error permanently. 1. Run the Game as an Administrator prototype 2 failed to save data fix
Right-click on , hover over Manage , and select Browse local files .
Open your library, right-click on Prototype 2 , select Manage , and click Browse local files .
Click . A prompt will pop up; choose "Apply changes to this folder, subfolders and files" and click OK . 5. Address OneDrive and Cloud Syncing Conflicts (not recommended for long-term security)
Navigate to C:\Users\[Your Username]\Documents\Activision\Prototype 2 and delete any corrupted, zero-byte profile or save files.
const handleSubmit = async (form) => if (isSubmitting) return; setIsSubmitting(true); const idempotencyKey = uuidv4(); try const res = await axios.post('/records', form, headers: 'Idempotency-Key': idempotencyKey ); showSuccess(res.data.id); finally setTimeout(() => setIsSubmitting(false), 500);
Look for settings labeled , Exclusions , or Protection Shield . Disable Windows Controlled Folder Access Right-click the on
Corrupted game files can prevent saving functions from triggering correctly. You can easily verify your installation through Steam. Open your . Right-click Prototype 2 and choose Properties . Select the Installed Files tab. Click Verify integrity of game files .
Let the community know in the comments below. For more Prototype 2 troubleshooting, check out our guides on fixing the "Infinite Loading Screen" and "Black Box crashes."
Close the OneDrive application completely via the Task Manager before starting your gaming session. 5. Verify the Integrity of Game Files
5.1 Race condition on client
Complete Guide to Fixing the "Prototype 2 Failed to Save Data" Error