How To: Fix Uplay-r1-loader64.dll Error In Assassin 39-s Creed Unity

He downloaded (for 64-bit systems) from Microsoft’s official site. Installed it. Rebooted.

Alex stared at his screen, the familiar Parisian rooftops of Assassin’s Creed Unity replaced by a cold, gray error box.

He double-clicked the icon. The splash screen appeared… then crashed. The error returned.

He opened → Virus & threat protection → Protection history . There it was: Threat quarantined: “UplayR1Loader” .

He restored the file and added the entire Assassin’s Creed Unity folder to the list. Problem solved? He launched the game.

And as he air-assassinated his first target, he whispered to the empty room: “Requiescat in pace, uplay_r1_loader64.dll.”