Auto redirect http to https --

 <?xml version="1.0" encoding="utf-8"?>

<configuration>

  <system.webServer>

    <httpProtocol>

      <customHeaders>

        <add name="Access-Control-Allow-Origin" value="*" />

        <add name="Access-Control-Allow-Credentials" value="true" />

        <add name="Access-Control-Allow-Methods" value="GET,HEAD,OPTIONS,POST,PUT" />

        <add name="Access-Control-Allow-Headers" value="Access-Control-Allow-Headers, Origin,Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers" />

      </customHeaders>

    </httpProtocol>

    <rewrite>

      <rules>

        <rule name="Imported Rule 1" stopProcessing="false">

          <match url="^(.*)$" ignoreCase="true" />

          <conditions>

           <add input="(https)" pattern="off"/>

<add input="{HTTPS}" pattern="^OFF$" />

          </conditions>

          <action type="Rewrite" url="/" appendQueryString="true" />

        </rule>

      </rules>

    </rewrite>

  </system.webServer>

</configuration>