Using chrome 47.0.2526.80 ( Official Build ) m (32-bit), I kept running into this Unknown network error when downloading Android Studio 1.5.1.0 nearly completed. I tried on two different computers, and tried with three different ISP internet connections. Nothing worked. Thanks God, I finally downloaded it successfully with Internet Explorer 11.x! What a weird! Anyway, I can try writing my first Hello World android app now. Be Happy! Keep Learning . Practicing . Sharing
Practice until you can't make it wrong.