sunone webserver : Proper authorization is required for this area

hello,

I have a problem with a webserver sunone 6 configuration.

When I try with a browser to see an URL with an ACL configured on this url
my browser return the following error:

unauthorized : Proper authorization is required for this area .Either your
browser does not perform authorization, or your authorization has failed.


I have no possibility to enter a user/password to access to the url. Why ?
What's the configuration for this ?

I looked on obj.conf, magnus.conf and server.xml on another webserver that's
works well but I see no difference.

regards