While importing sample project in android studio, this error coming as Access is denied
even if i click on : Fix Gradle wrapper and re-import project 
You can find this project in this directory of your PC : ~\SDK\samples\android-23\admin\AppRestrictionEnforcer

I solve it. thnx for all of u. I edit the following files as :
build.gradle (application) as :
gradle-wrapper.properties as: