IETF. Retrieved 2016-01-09. ^ "Troubleshooting: Error Pages". The response will also include a list of locations from which the user agent can select the most appropriate.301 - Moved PermanentlyA status code of 301 tells a client that the If the server does not wish to make this information available to the client, the status code 404 (Not Found) can be used instead. 10.4.5 404 Not Found The server has http://lanprolab.net/error-code/apache-error-code-401.php
you) and servers communicate. Check Up Down. RFC 3229. This provides the error document the context of the original request. http://www.debianhelp.co.uk/errorcodes.htm
Either you supplied the wrong credentials (e.g., bad password), or your browser doesn't understand how to supply the credentials required.