The fc-m64.dll error in usually happens because your antivirus has flagged and quarantined the file or the game files are corrupted. Immediate Fixes
This is the most common cause. Antivirus software (especially Windows Defender) often flags this specific DLL as a "false positive." Open your Antivirus settings. Check the Quarantine or Protection History section. far cry 5 fc-m64.dll missing
For PC gamers, the "DLL is missing" error is a rite of passage, but that doesn't make it any less annoying. If you are staring at this error screen, don't panic. You don’t need to reinstall the entire 40GB game just yet. Here is your tactical guide to retrieving that lost file and getting back into the fight. The fc-m64
If you see fc-m64.dll, select it and click Restore or Allow. Check the Quarantine or Protection History section
Remove conflicting mods/overlays
Your antivirus may have flagged the DLL as a "false positive" and moved it to quarantine.