While working on xamarin in visual studio once you install packages that have dependency on other packages say Android.Support.v4 or Android.Support.v7.CardView sometimes you get below error

Unzipping failed. Please download https://dl-ssl.google.com/android/repository/android_m2repository_r25.zip and extract it to the C:\Users\shakti\AppData\Local\Xamarin\Android.Support.v4\23.1.1.0\content directory.

Resolution:

The issues can occur due to varied reasons. Solution is to delete corresponding folders from “%appdata%” directory and rebuild your project in visual studio. Xamarin will download these folders again and issue will be resolved.