Error 404 pages are where servers direct browsers when a URL seeks a missing page. While it’s easy to think you won’t really need a 404 page with a WordPress install, you’d be surprised. Even though all the links to the article or page you deleted are removed automatically from within your site, someone else might have created a link on their site to your post, which will no longer work.

That is what happening with me. I have shifted my blog to new server and its creating lot of problems for my blog. Most of the time this new server is down and I have to redirect my blog to my previous server which doesn’t have latest posts.

In order to create a custom 404 template file, follow these steps:
1. Copy the contents of your page.php template file into a new template file
named 404.php template file.
2. You can remove the entire loop from the file.

3. Place in some encouraging text and the PHP code to include the search.php
template file:
<h2>Not Found</h2>
<p>Sorry, but you are looking for something that
isn’t here.</p>
<?php include (TEMPLATEPATH . “/searchform.php”); ?>

4. Add the #sidebarLT XHTML div and PHP WordPress template tag back in
under the content div:
<div id=’sidebarLT”>
<?php get_sidebar();?>
</div><!–//sidebarLT –>

These steps should give you a 404 error page that looks like these:

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