<system.web>
    <customErrors mode="Off" />
    <compilation targetFramework="4.6.1" />
    <httpRuntime targetFramework="4.5" />
    <authentication mode="Windows" />
    <authorization>
        <deny users="?" />
    </authorization>
    <httpModules />
</system.web>

<system.webServer>
    <security >
      <authentication>
        <anonymousAuthentication enabled="false" />
        <windowsAuthentication enabled="true" />
      </authentication>
    </security>
  </system.webServer>

<location path="TestSite">
<system.webServer>
    <security>
        <authentication>
            <windowsAuthentication enabled="true" />
        </authentication>
    </security>
</system.webServer>