For those of you Android developers making the transition from ADT-Eclipse to Android Studio - IntelliJ Idea, you would have noticed that more than a few things are done differently. Just a bit frustrating from time to time. With ADT to update the Android SDK all you need to do is open Eclipse, click on the Android SDK Manager and update what you need to update.
Android Studio on Windows 8 requires that you open it as an administrator before you can successfully update. If you do not do this Android SDK will throw Access denied errors and nothing will be installed. Remember to install updates in Android Studio on Windows 8+, open Android Studio as administrator first