Fixed web config file for local iis backup migrate problem
      <!--Protect backup_migrate directory in local IIS environment-->
        <rule name="postinst-redirect" stopProcessing="true">
         <match url="sites/default/files/private/backup_migrate" />
         <action type="CustomResponse" statusCode="403"
subStatusCode="0" statusReason="Forbidden" statusDescription="Access is
forbidden." />
        </rule>