I can no longer login with the admin user after this re-configuration since it returns incorrect password from the Active Directory.
Did I miss something else in configuring AD authentication ? If so what because the guide I followed was straight-forward and has no mention of using the built-in database users. I am not sure either if my permissions will be linked to my AD group ( my AD user is not in Admin group).
I am also not sure on whether Jenkins continues supporting login with the admin user after you have enabled AD authentication.