Can't make httpErrors to work

Question

I've added the following to config file.

<system.webServer>
  ...
  <httpErrors errorMode="Custom"
              existingResponse="Replace" 
              defaultResponseMode="ExecuteURL">
    <clear/>
    <error statusCode="404"
           responseMode="ExecuteURL"
           path="http://google.se" />
  </httpErrors>
</system.webServer>

However, it seems that I still get the default page with yellow background and the stack trace. I've tried commenting out the filter for error handling and adding/removing custom errors in system.web. (I'm trying the approach of httpErrors as suggested in this great article.)

What am I missing? What more can I do to trouble-shoot it?

Answer 1

You can do it at an ASP.NET level like that :

<system.web>
    ...
    <customErrors mode="On">
        <error statusCode="404" redirect="http://www.google.se"/>
    </customErrors>
</system.web>

If you really want to dot it at IIS level, you can like that :

<system.webServer>
    <httpErrors errorMode="Custom" existingResponse="Replace">
        <remove statusCode="404"/>
        <error statusCode="404" path="http://www.google.fr" responseMode="Redirect"/>
    </httpErrors>
</system.webServer>

When you want to redirect to an absolute URL, you must set the "responseMode" attribute to "Redirect", "ExecuteURL" is for dynamic served content, from MSDN.