Failed to fetch URL https://dl-ssl.google.com/android/repository/addons_list-1.xml, reason: Connection to https://dl-ssl.google.com refused [closed]

Answer 1

I had the same problem today and it costed me all day :-( I tried all of the suggestions above, but none of them did the work.

At the end, I uninstalled Comodo Firewall, and everything worked fine. Before uninstalling, I tried to add the all relevant files as trusted application in the comodo firewall, but it didn't work