Page Not Found
404 Error. Go Back to
404 File Not Found is a message in the case of a "404 error";
it appears in most web browsers when the connection works, and
the first part of the URL correctly leads to a working web
server, but the rest of the URL specifies a page that does not
exist on the server.
The 404 error is one of the standard response codes of the web's
HTTP protocol. The first 4 indicates a client error such as a
mistyped URL. The middle 0 refers to a general syntax error. The
last 4 just indicates the specific error in the group of 40x,
which in this case is "URL Not Found".
The use of three-digit codes is similar to the use of such codes
in earlier protocols such as FTP and NNTP. These errors can be
customized on a large number of such servers, such as Apache, to
display a page that could be of more help than a default.
Internet Explorer will not read these pages, however, unless
they are larger than 512 bytes.