Getting an Error page to work with a 401.2 error

I have a website set up that has a web.config in the root directory.  There are also 3 sub directories that each have a web.config that is used for permissions. My problem is that when I try to get the custom errors to work.  I have the following code in the root level web.config.

<system.web>
    <customErrors mode="On" defaultRedirect="Error.htm" />
    <authentication mode="Windows"/>
    <authorization>
      <deny users="?" />
    </authorization>

I have the following code in one of the sub directories:

<?xml version="1.0"?>
<configuration>
  <system.web>
    <authorization>
      <allow users="ADS\Smith"/>
      <allow users="ADS\Jones"/>
      <deny users="*"/>
    </authorization>
    <customErrors mode="On" defaultRedirect="Error.htm">
      <error statusCode="401" redirect="Admin401.htm" />
    </customErrors>
  </system.web>
</configuration>

 When I receive a general error the Error.htm page works as it should.  What I am trying to get to work is the 401.2 error page. In the subfolder the web.config looks like this:

How do I get the 401.2 error to use my Admin401.htm?