I\'m running under windows xp sp3 and i have no firewall, no proxy, my internet connection works perfectly but android emulator have no connection (browser and app), i\'ve t
try to go to Settings > Wireless & Networks > Enable Wifi (if you get an error, restart emulator till it works ( its a bug in emulator, we all have this)
Start your from command prompt prompt like
your_path_of_android_sdk\tools\emulator -avd <AVD Name> -dns-server 8.8.8.8
I think this will help you out as a temporary solution.