title: Custom 404 Page NOT Served for extensionless URL
body: <p>I am running into a situation,</p>
  
  <p>My custom 404 page works just fine with URL that has extensions.</p>
  
  <p><a href="http://www.space.ca/ssss.aspx" rel="nofollow">http://www.space.ca/ssss.aspx</a>
  A custom page URL serves up as intended,</p>
  
  <p>however, if you try the link without the .aspx extension
  <a href="http://www.space.ca/ssss" rel="nofollow">http://www.space.ca/ssss</a></p>
  
  <p>it goes to the IIS default page. Any idea on why?</p>
  
  <p>This is my configuration , inside system.webserver</p>
  
  <pre><code> &lt;httpErrors&gt;
              &lt;remove statusCode="500" subStatusCode="-1" /&gt;
              &lt;remove statusCode="404" subStatusCode="-1" /&gt;
              &lt;error statusCode="404" prefixLanguageFilePath="" path="/errors/404.aspx" responseMode="ExecuteURL" /&gt;
              &lt;error statusCode="500" prefixLanguageFilePath="" path="/errors/500.aspx" responseMode="ExecuteURL" /&gt;
          &lt;/httpErrors&gt;
  </code></pre>