Prototype 2 Failed To Save Data Fix Exclusive 〈EASY | Release〉
Create a on Windows and set it as an Administrator .
General permission issues can prevent the game from creating the necessary save directory.
If you prefer manual fixes, you can download the mod. Place the file in the prototype2.exe directory. This DLL patches the engine on the fly to fix all memory and HID polling issues.
To fix the "failed to save data" error in Prototype 2 , the most effective solution is usually granting the game administrative privileges or adjusting Windows security settings that block the game from writing to your Documents folder. 1. Run as Administrator and Compatibility Mode
Go back to the tab in the prototype2.exe Properties window. prototype 2 failed to save data fix exclusive
If you’ve tried everything and it still fails, it’s often due to how Windows handles synced folders (like OneDrive). Creating a user account on your PC that isn't tied to a Microsoft/OneDrive account is a known "nuclear option" that works for many. Create a new local user with Administrator privileges.
Right-click prototype2.exe and select Set affinity .
Before we dive into the solution, let's understand the possible causes of the issue:
Look for " HID-compliant consumer control device ." Right-click and Disable it. Create a on Windows and set it as an Administrator
Either turn it off (not recommended for long-term) or click . Add prototype2.exe to the allowed list. 3. Clear Corrupt Profile Data
| Step | Action | Expected Result | | :--- | :--- | :--- | | 1 | (Steam Library > Properties > Local Files) | Replaces missing DLLs and fixes corrupt base assets | | 2 | Check Anti-Virus Quarantine | Ensure prototype2.exe is not being blocked by Windows Defender or third-party AV | | 3 | Run in Compatibility Mode | Right-click prototype2.exe > Properties > Compatibility > Run this program in compatibility mode for Windows 7 | | 4 | Delete Local Save Files | Navigate to the save folder, back up your slot-A.bin , delete it, and try to save a new game. If it works, your old save is corrupted. You may need to start over |
Steam Default: C:\Program Files (x86)\Steam\steamapps\common\Prototype 2\ Select prototype2.exe and click . Restart your PC and launch the game through Steam. Fix 2: Uncheck the "Read-Only" Attribute on the Save Folder
Follow these methods in order. Start with the most common culprit: Windows Defender. 1. Allow Prototype 2 Through Controlled Folder Access Place the file in the prototype2
The game tries to save to a specific user folder. If your Windows username contains spaces or special characters, or if the folder simply doesn't exist, the game crashes the save process.
Windows Defender often blocks the game from writing files to your "Documents" folder. Windows Security Virus & threat protection Manage ransomware protection Controlled folder access Alternative: Keep it on but click
If you use Microsoft OneDrive, your Documents folder might be constantly syncing to the cloud. This sync process can lock the Prototype 2 save files at the exact millisecond the game tries to modify them, resulting in a failed save message.
: Uncheck All Processors , check only CPU 0, CPU 1, CPU 2, and CPU 3 , then click OK . Manually Create the Save Directory
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Create a on Windows and set it as an Administrator .
General permission issues can prevent the game from creating the necessary save directory.
If you prefer manual fixes, you can download the mod. Place the file in the prototype2.exe directory. This DLL patches the engine on the fly to fix all memory and HID polling issues.
To fix the "failed to save data" error in Prototype 2 , the most effective solution is usually granting the game administrative privileges or adjusting Windows security settings that block the game from writing to your Documents folder. 1. Run as Administrator and Compatibility Mode
Go back to the tab in the prototype2.exe Properties window.
If you’ve tried everything and it still fails, it’s often due to how Windows handles synced folders (like OneDrive). Creating a user account on your PC that isn't tied to a Microsoft/OneDrive account is a known "nuclear option" that works for many. Create a new local user with Administrator privileges.
Right-click prototype2.exe and select Set affinity .
Before we dive into the solution, let's understand the possible causes of the issue:
Look for " HID-compliant consumer control device ." Right-click and Disable it.
Either turn it off (not recommended for long-term) or click . Add prototype2.exe to the allowed list. 3. Clear Corrupt Profile Data
| Step | Action | Expected Result | | :--- | :--- | :--- | | 1 | (Steam Library > Properties > Local Files) | Replaces missing DLLs and fixes corrupt base assets | | 2 | Check Anti-Virus Quarantine | Ensure prototype2.exe is not being blocked by Windows Defender or third-party AV | | 3 | Run in Compatibility Mode | Right-click prototype2.exe > Properties > Compatibility > Run this program in compatibility mode for Windows 7 | | 4 | Delete Local Save Files | Navigate to the save folder, back up your slot-A.bin , delete it, and try to save a new game. If it works, your old save is corrupted. You may need to start over |
Steam Default: C:\Program Files (x86)\Steam\steamapps\common\Prototype 2\ Select prototype2.exe and click . Restart your PC and launch the game through Steam. Fix 2: Uncheck the "Read-Only" Attribute on the Save Folder
Follow these methods in order. Start with the most common culprit: Windows Defender. 1. Allow Prototype 2 Through Controlled Folder Access
The game tries to save to a specific user folder. If your Windows username contains spaces or special characters, or if the folder simply doesn't exist, the game crashes the save process.
Windows Defender often blocks the game from writing files to your "Documents" folder. Windows Security Virus & threat protection Manage ransomware protection Controlled folder access Alternative: Keep it on but click
If you use Microsoft OneDrive, your Documents folder might be constantly syncing to the cloud. This sync process can lock the Prototype 2 save files at the exact millisecond the game tries to modify them, resulting in a failed save message.
: Uncheck All Processors , check only CPU 0, CPU 1, CPU 2, and CPU 3 , then click OK . Manually Create the Save Directory