Antivirus software may have quarantined the file, or a bad mod manager operation deleted it. Fix:
In your mod manager, ensure ppf.esm loads after the base game files ( Fallout4.esm , DLCRobot.esm , etc.) but before most other ESP mods. Fallout 4 Ppf.esm
Mods that fundamentally change the landscape, add many new objects in the city, or remove existing structures without patching for PRP can cause issues. Antivirus software may have quarantined the file, or
It forwards fix records from community keystones like the Unofficial Fallout 4 Patch to preserve gameplay corrections without creating mod conflicts. Where Should Ppf.esm Sit in Your Load Order? Fallout 4 Ppf.esm