[gtirloni]

Exactly what I was thinking. When I access Jenkins, after having installed Blue Ocean, I'm still greeted with the traditional UI and the "Open Blue Ocean" button.

I do see the option in my user settings page but I don't understand what it's for. What is this "notifications URL"?

[i386]

Jenkins issues all kinds of links to itself via email, Slack, HipChat and Github to refer to runs of pipelines or the homepage of jobs. When we do this, we send you to a well known URL that will redirect you to your preferred UI - Blue Ocean or "Classic" Jenkins. Thats what this preference controls. I hope this helps!

[gtirloni]

That makes sense, thank you!