How to direct to a custom error page?

Question

In SharePoint,

I want to be able to direct to a custom error page if a 404 is reached.

However, after following:

How to point to a custom 404 error Web page in Windows SharePoint Services 3.0 or in Microsoft Office SharePoint Server 2007

I'm unable to hit my custom error page when trying for entries such as:

http://localhost/adsdasad or something erroneus.

Any ideas?

Answer 1

Those URL's are not being handled by your SharePoint configuration because IIS does not think that the should be handled by SharePoint. As Chris points out you should add custom 404 handling at the IIS level too.