Wait for the process to complete; it will attempt to repair missing or damaged system-level components.

The uplay_r1_loader64.dll error in Assassin’s Creed Unity is a notorious but solvable problem. In 90% of cases, the cause is . Always start by checking your quarantine and adding game folder exclusions.

If you purchased the game officially, do not download files from random third-party sites. Let your launcher repair the game directories automatically. On Ubisoft Connect: the Ubisoft Connect PC client.