Are you playing the game through or a different launcher? Do you use any mods or widescreen fixes for the game?
The most common reason modern systems fail to save is Windows 10/11 "Controlled Folder Access," which blocks the game from writing to your Documents folder. Allow Prototype 2 through Windows Security Windows Security Virus & threat protection Manage settings , then scroll to Controlled folder access Manage controlled folder access Allow an app through Controlled folder access Add an allowed app Navigate to your game folder (usually C:\Program Files (x86)\Steam\steamapps\common\Prototype 2 ) and select prototype2.exe Administrative and Compatibility Permissions
For extra stability, also check the box for and select Windows 7 from the dropdown menu.
This is the hidden trap.
Windows Defender’s “Controlled Folder Access” is a common silent killer of old games.
Open .
I can provide specific system adjustments based on your setup. Share public link
Right-click on , hover over Manage , and select Browse local files .
Use this quick reference table to make sure your system matches the game's expected pathways and behaviors: Setting Element Expected Configuration Baseline C:\Users\YourUsername\Documents\Activision\Prototype 2 Stores local game data. Executable Rights Enabled (Run as Administrator) Allows directory creation. Folder Security Status Exception added to Controlled Folder Access Stops anti-ransomware blocks. Storage Flag Read-only attribute cleared Permits real-time save updates.
: Press the Windows Key, type Controlled folder access , and press Enter.
Locate the cloud icon in your taskbar, enter settings, and while playing.
Check for a folder named . If it is missing, create a main folder named Activision and a subfolder inside it named Prototype 2 .
Note: If you launch the game through a desktop shortcut, perform these exact same steps on the shortcut icon as well. 2. Disable Steam Cloud Synchronization
Are you playing the game through or a different launcher? Do you use any mods or widescreen fixes for the game?
The most common reason modern systems fail to save is Windows 10/11 "Controlled Folder Access," which blocks the game from writing to your Documents folder. Allow Prototype 2 through Windows Security Windows Security Virus & threat protection Manage settings , then scroll to Controlled folder access Manage controlled folder access Allow an app through Controlled folder access Add an allowed app Navigate to your game folder (usually C:\Program Files (x86)\Steam\steamapps\common\Prototype 2 ) and select prototype2.exe Administrative and Compatibility Permissions
For extra stability, also check the box for and select Windows 7 from the dropdown menu.
This is the hidden trap.
Windows Defender’s “Controlled Folder Access” is a common silent killer of old games.
Open .
I can provide specific system adjustments based on your setup. Share public link
Right-click on , hover over Manage , and select Browse local files .
Use this quick reference table to make sure your system matches the game's expected pathways and behaviors: Setting Element Expected Configuration Baseline C:\Users\YourUsername\Documents\Activision\Prototype 2 Stores local game data. Executable Rights Enabled (Run as Administrator) Allows directory creation. Folder Security Status Exception added to Controlled Folder Access Stops anti-ransomware blocks. Storage Flag Read-only attribute cleared Permits real-time save updates.
: Press the Windows Key, type Controlled folder access , and press Enter.
Locate the cloud icon in your taskbar, enter settings, and while playing.
Check for a folder named . If it is missing, create a main folder named Activision and a subfolder inside it named Prototype 2 .
Note: If you launch the game through a desktop shortcut, perform these exact same steps on the shortcut icon as well. 2. Disable Steam Cloud Synchronization
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