Unable to access Android SDK add-on list

Question

I\'m new to Android programming. I was installing the Android studio and it got stuck at one point during installation showing the following message.

So

Answer 1

Yet another reason why this can happen is when your time and date settings are not synchronized correctly. I installed android studio inside a virtual machine linux guest that didn't properly synchronize the time with the windows host and as a consequence the above message occured even though my internet connection was working fine.