2007-05-16: 401 Unauthorized (sometimes mislabeled
as 401 Forbidden) is the
HTTP status
code produced by a
web server when you don't
have the right credentials to access the page or file you have asked for.
The web server sends your browser the 401 Unauthorized response when
you access a password-protected page without presenting a password.
Normally the web browser automatically recognizes this situation and
displays a password prompt at this point. However, if you don't know
the correct username and password and click "Cancel" rather than trying again,
the browser may show you the 401 Unauthorized error message directly.
For a complete list of standard HTTP status codes,
see the W3
Consortium's website.
Legal Note: yes, you may use sample HTML, Javascript, PHP and other
code presented above in your own projects. You may not reproduce
large portions of the text of the article without our express permission.
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