IE7Pro not showing Server 404 Error Pages

[webstuck]

In my .htaccess file, I redirect any 404 web page errors to a server error page. However, I was noticing that if you go to non-existent web page using Internet Explorer with IE7Pro installed, it brings up its own error page instead of my server error page. I imagine there are other programs out there that also handle 404 error pages this same way. How can I set up my server so that people going to a non-existent page on my website see the server error page instead of a program's, such as IE7PRO, error page?

[lammert]

Hi webstuck,

One problem I can think of is that IE sometimes displays its own 404 error message if the page coming from the server has a size which is below a certain threshold. Have you tried to return a large 404 error page?

[lucy24]

If wikipedia can be believed, the cutoff is 512 bytes, not only for MSIE but also for Google Chrome. Assuming that count is for the actual html-- mine's over 512 counting everything, but under 512 going by text alone, and Chrome displayed the custom text as intended-- you can pad it simply by throwing in a little more formatting.

Wouldn't it be nice if all MSIE Issues could be addressed so easily? :-)