Navigate directly to your Prototype 2 installation folder (typically found under C:\Program Files (x86)\Steam\steamapps\common\Prototype 2 ).
Third-party antivirus programs (such as Avast, Bitdefender, or Kaspersky) frequently flag older games attempting to write save data as suspicious activity. Open your specific antivirus user interface.
Alternative: If you do not want to use this feature, you can temporarily toggle Controlled Folder Access to while playing. 3. Change the Compatibility Mode prototype 2 failed to save data fix
It sounds like you're encountering a common issue in Prototype 2 where the game fails to save your progress (e.g., “Failed to save data” or “Save failed”). Here’s a structured fix guide:
If you are playing Prototype 2 on a modern PC, you might encounter a frustrating issue where the game refuses to save your progress, displaying a "failed to save data" error message. This issue is usually tied to modern Windows security settings, permission conflicts, or file paths that the game's outdated engine cannot recognize. Navigate directly to your Prototype 2 installation folder
If you’re still stuck after all steps, visit the for Prototype 2 or the PCGamingWiki page for advanced INI tweaks. Happy consuming—and don’t let bad saves stop you from unleashing hell on New York Zero.
Create a new folder inside it and name it exactly Prototype 2 . Launch the game and attempt to save. 6. Adjust Read-Only Folder Attributes Alternative: If you do not want to use
In the same tab as step 1, check Run this program in compatibility mode for and select Windows 7 or Windows 8 .