Android Studio Update failed

Solution:

　　Under Windows platform

If the Android Studio that is running is 32-bit needed to modify the file:

In the startup directory of Andriod Studio. Find studio.exe.vmoptions this file. Add in the back

　　　　　　-djava.net.preferipv4stack=true

-didea.updates.url=http://dl.google.com/android/studio/patches/updates.xml
-didea.patches.url=http://dl.google.com/android/studio/patches/

If it's 64-bit , find the studio64.exe.vmoptions file, and add it to the back.

　　　　　　-djava.net.preferipv4stack=true

-didea.updates.url=http://dl.google.com/android/studio/patches/updates.xml
-didea.patches.url=http://dl.google.com/android/studio/patches/

　　Under Mac:

1. Choose your Android Studio.app

2. Show Package Contents

3. Open the Content/info.plist file find <key>VMOptions</key> Add the following parameters to the content

　　　　　　-djava.net.preferipv4stack=true
-didea.updates.url=http://dl.google.com/android/studio/patches/updates.xml
-didea.patches.url=http://dl.google.com/android/studio/patches/

Android Studio Update failed