<code>ErrorDocument 401</code> directive, then it must refer to a local
document.</strong></p>
- <p>Microsoft Internet Explorer (MSIE) will by default ignore
- server-generated error messages when they are "too small" and substitute
- its own "friendly" error messages. The size threshold varies depending on
- the type of error, but in general, if you make your error document
- greater than 512 bytes, then MSIE will show the server-generated
- error rather than masking it. More information is available in
- Microsoft Knowledge Base article <a
- href="http://support.microsoft.com/default.aspx?scid=kb;en-us;Q294807"
- >Q294807</a>.</p>
-
<p>Although most error messages can be overridden, there are certain
circumstances where the internal messages are used regardless of the
setting of <directive module="core">ErrorDocument</directive>. In