Kentico CMS: Page not found URL

Question

Kentico CMS

I have created a custom 404 page to redirect to when someone hits a 404/page not found error.

And then in Site Manager > Settings > Content I have added the URL location for this custom page.

Now when I try to navigate to a page that doesnt exist in my site I still get the standard 404 Server Error page. Why is it not redirecting to my custom page?

Site Structure:

Site Manager > Settings Page:

Answer 1

If you're using extensionless urls (looks like it), have you changed the 404 settings within IIS? You need to map the 404 error to Kentico's handler, /cmspages/handler404.aspx.

IIS 7 Instructions. IIS 6 Instructions