The "Unable to locate Uplay" error in Watch Dogs 2 typically occurs because the game cannot find the launcher (now Ubisoft Connect
Don't let a launcher error keep you out of San Francisco. With these fixes, you will be hacking CTOS and dodging drones in Watch Dogs 2 within ten minutes. unable to locate uplay pc watch dogs 2
Here is a review of the most effective community-tested fixes as of : Quick Fixes The "Unable to locate Uplay" error in Watch