Why does my web site prompt for a username password when custom errors mode is on
<p>While navigating my site with custom errors mode set to off it behaves normal. If I turn I turn custom errors mode to on, then my first visit to the site prompts me with a username password dialog box. </p>

<p>The entire site is enforced with SSL if that matters. Where should I start looking? Is this possibly an IIS issue? I'm not sure why setting custom errors mode to on/off would invoke this type of behavior.</p>
