About ereur 401--->( Authorization Required)

bplaced bplaced in English
1

the erreur 401 ( Authorization Required)
is not working
my .htaccess

ErrorDocument 401 /404.php
ErrorDocument 402 /404.php
ErrorDocument 403 /404.php
ErrorDocument 404 /404.php
ErrorDocument 405 /404.php
ErrorDocument 407 /404.php
ErrorDocument 408 /404.php
ErrorDocument 409 /404.php
ErrorDocument 410 /404.php
ErrorDocument 411 /404.php
ErrorDocument 412 /404.php
ErrorDocument 413 /404.php
ErrorDocument 414 /404.php
ErrorDocument 415 /404.php

hichem.bplaced.net/login
:ps:
What is the solution???

2

On bplaced only custom 404 error messages allowed, all others are blocked for the user.