Failed to resolve: android.arch.lifecycle:extensions:1.0.0-alpha1 android studio 3.0

Question

I am building a project in android studio 3.0 with android plugin \'com.android.tools.build:gradle:3.0.0-alpha1\' and gradle version gradle-4.0-milestone-1-al

Answer 1

open preference for mac or you can open setting for windows then search proxy setting inside the open window then unchecked proxy authentication it will work