How To Fix Far Cry 4 Uplay-r1-loader64.dll Missing May 2026

Technical Support Report: Far Cry 4 – Missing uplay-r1-loader64.dll

Actions

Look for an entry related to uplay_r1_loader64.dll or a "Threat quarantined" notification. Click and select Restore .

• If official reinstall/repair fails and you have a legitimate copy of the DLL from an official Ubisoft/Ubisoft Connect installer (not from untrusted DLL repositories), place the 64-bit DLL next to the game .exe or in C:\Windows\System32. Then register it if required:

  Method 1: Verify Game Files (The "Golden" Fix)