If verifying files doesn't work, sometimes the game’s local cache needs a more aggressive refresh. A method recommended by Ubisoft Support is to force the game to rebuild the problematic file:
FC_m64.dll (Far Cry Multi-core 64-bit Dynamic Link Library) is a crucial system file responsible for managing game processes, specifically dealing with graphics, engine functions, and user interactions within Far Cry 5 and Far Cry New Dawn . Without it, the game cannot load its core components. Why does "fcm64dll missing" happen in Portable Versions? far cry 5 fcm64dll missing portable