Android Studio 2.2.2: All packages are not available for download

Question

I installed Android Studio 2.2.2 on my system. After when I openend one of the projects which have compileSdkVersion 23, got following error,

Answer 1

Open Android SDK Manager

1. Click on Tools.
2. Click on Android.
3. Click on SDK Manager.

Update your SDK's

Then Sync ,Re-Build and Restart Your Project