title: IIS 7.0 doesn't display custom error pages
body: <p>I'm running an application that has its own error handlers. Error pages are displayed properly while testing in dev environment (error pages are displayed properly). <br/>
  However the same code on the production IIS, error pages are substituted.
  The problem is described <a href="http://www.west-wind.com/weblog/posts/745738.aspx" rel="noreferrer">here</a>.</p>
  
  <p>I just wonder is there a way to write this settings in web.config file instead of modifying the code.</p>