Before downloading anything new, check if your computer simply "hid" the file to protect you. Open and go to Virus & threat protection . Click on Protection history . Look for an entry related to uplay_r2_loader64.dll . If found, click Actions and select Allow or Restore . 2. Add a Game Folder Exclusion To stop your antivirus from deleting the file again: Go to Virus & threat protection settings > Manage settings .

If you're still experiencing issues, you can try: