Hello! I have a Centos 5.4 with Squid version 3.0.STABLE24 and samba Version 3.0.33-3.14.el5. I have connfigured squid authentication with ntlm and it works fine when the user have access allowed by an squid acl. But when the user have the access denied by an squid acl, the browser (internet explorer and mozilla) shows a login pop-up window, and I don't want the users trying other peoples accounts. Only when I cancel the pop-up windows the browser show me the "access denied" page. I have installed and tested squid in a windows environment with the same config and works fine, it doesnt show a login pop-up windows when the user has no access, it just show the "access denied" page. Here is my squid.conf: auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp auth_param ntlm children 5 auth_param ntlm keep_alive on acl manager proto cache_object acl localhost src 127.0.0.1/32 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT acl usuarios proxy_auth REQUIRED http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access deny usuarios # I know, this line has no sense, no one has access, it's a just a test environment Are there any way to disable the login pop-up for users with no internet access? Thanks!