+**401**
+The numerical [HTTP Status](/wiki/HTTP_Status) code "401" indicates that the client request has not been authenticated. It signifies that valid [Authentication](/wiki/Authentication) credentials are required to gain access to the requested resource. This [Client Error](/wiki/Client_Error) is common when users attempt to reach protected parts of the web without proper identification.
+## See also
+- [HTTP](/wiki/HTTP)
+- [Status Code](/wiki/Status_Code)
... 2 more lines