Exclude the Activision or Prototype 2 folder inside your Documents directory from OneDrive syncing by going into OneDrive Settings > Account > Choose Folders. 5. Create the Save Directory Manually
Turn off or add the game to the "Allowed apps" list.
If the basic steps fail, the game often crashes during the save process because it can't handle high-refresh-rate monitors or modern CPUs.
The PC version of Prototype 2 is notorious for a frustrating bug where the game throws a "failed to save data" error, completely blocking your campaign progress. This issue typically stems from modern Windows security restrictions, outdated game file directories, or administrative privilege conflicts. prototype 2 failed to save data fix exclusive
Add prototype2.exe to the allowed list to permit it to write save files to your Documents folder. : The game often fails when running on more than 4 CPU cores.
The game lacks permission to create save directories.
If the above didn't work, this method fixes the persistent "Failed to Save Data" pop-up that forces a new game start. Navigate to Documents\Prototype 2 . Exclude the Activision or Prototype 2 folder inside
The “Failed to Save Data” error happens because Prototype 2 is a game designed for Windows 7/8 (released in 2012) that struggles to run on modern Windows 10 and 11 hardware. The issues are usually due to conflicts between the game’s old save system and new security features, high-core-count CPUs, or specific driver permissions.
Are you running the game through or a different launcher? What version of Windows are you currently using?
Windows 10/11 "Controlled Folder Access" often blocks games from writing to the Documents folder. Open . Go to Virus & threat protection . Select Manage ransomware protection . If the basic steps fail, the game often
Third-party antivirus (e.g., Avast, McAfee, Norton) may block writes to Documents.
This process will scan your game files and replace any corrupted files.
If you were to write a report or a task to fix this issue, here's a structured approach:
Prototype 2 attempts to write to Documents\Activision\Prototype 2\ the Steam userdata folder simultaneously. Controlled Folder Access blocks one of these writes.