I can\'t seem to access the Eclipse marketplace. I\'m using Juno 4.2. I tried deleting eclipse and removing all plugins, deleting my .metadata, and deleting the eclipse app
I was facing the same issue and found here useful steps which saved my time a lot. Hope so below attached image will help you a lot-
Window-> Preferences-> General-> Network Connection
Change Active Provider Native to Manual if problem is not resolved by using the steps mentioned in snapshot. Make sure HTTP/HTTPS should be checked and if any IP is required for your proxy settings then you should provide proxy IP in host and port number as well.