Launch the game, start a new campaign, and attempt to save manually to test if the game successfully writes data to this newly created directory. Method 4: Clean Up the OneDrive Sync Conflict
Locate your save folder, typically found at: C:\Users\[Your Username]\Documents\Activision\Prototype 2\ Right-click the Prototype 2 folder and select . Under the General tab, uncheck the Read-only attribute.
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If the error persists, move on to Step 2. prototype 2 failed to save data fix exclusive
Q: Why does Prototype 2 keep failing to save data? A: Corrupted game files, insufficient permissions, conflicting software, or outdated drivers may cause the issue.
If you are playing on Steam, the Cloud Sync feature can sometimes overwrite a successful local save with a "failed" or empty cloud state. Right-click Prototype 2 in your . Select Properties .
Released in 2012, Prototype 2 remains a fan-favorite open-world action game. However, modern PC gamers running the game on Windows 10 or Windows 11 frequently encounter a game-breaking bug: the infamous error. When this happens, the game refuses to create or update save files, forcing players to restart their progress from scratch every time they boot up the game. Launch the game, start a new campaign, and
By combinations of running the executable as an administrator and clearing a path through Windows Defender or OneDrive, you will bypass the architectural limits of this 2012 port. If the problem persists, ensure your Windows user account profile name does not contain special characters (like symbols or non-English lettering), as older game engines sometimes fail to parse file paths containing non-ASCII text characters.
If you use Microsoft OneDrive, it may be automatically backing up your Documents folder. When Prototype 2 tries to save, OneDrive locks the file to upload it, causing the save to fail.
Once your saving problems are fixed, you might encounter stability issues stemming from high-core CPUs and modern hardware polling. Use these exclusive tweaks to ensure optimal performance. The High-Core CPU Crash Fix (Processor Affinity) This public link is valid for 7 days
For 2026, the is recommended. It not only fixes crashes but also improves overall stability, which can indirectly resolve save issues. Install the mod to your game directory. Configure the .ini file to your liking. 💡 Summary of Solutions Target Issue Effectiveness Controlled Folder Access Windows Blocking Saves Delete save_data Folder Corrupt Save Slot Run as Administrator Permission Denied Prototype2Fix Mod General Incompatibility High (Stability)
Steam or OneDrive locks the save file while the game tries to write to it.
Set the executable to run in compatibility mode for Windows 7. Fix 2: Tackle Controlled Folder Access
If is turned on, click Allow an app through Controlled folder access . Click Add an allowed app and select Browse all apps .
: In the same Compatibility tab, click "Change settings for all users" at the bottom and check "Run this program as an administrator" again there to ensure the setting sticks.