Most players find the missing file is actually still on their computer, just hidden in quarantine. Open (search for it in the Start menu). Go to Virus & threat protection . Click on Protection history .
To fix the "uplay_r1_loader64.dll missing" error in , you typically need to restore the file from your antivirus quarantine reinstall the Ubisoft Connect client
2024-05-24 (Generalized) Application: Far Cry 4 (PC) Error: The program cannot start because uplay-r1-loader64.dll is missing from your computer.
The Uplay/R1 overlay is a notorious source of DLL conflicts. Disabling it forces the game to bypass the faulty loader.
If the file isn't in your quarantine history, it might be genuinely missing or corrupted. You can force the game launcher to redownload it.
The safest way is to copy it from a friend's PC who has Far Cry 4 installed, or search for the official Ubisoft DLL pack (though Ubisoft doesn't officially distribute single DLLs).