Problems with ldap authentication

[Marcio Demetrio Bacci <marciobacci@xxxxxxxxx>]

My LDAP Authentication do not work in Squid. I have already saw many tutorials, but nothing solve this problem.
I have installed Squid 3.4 on Debian 8. My DC is a Samba 4.2.
In /var/log/squid3/cache.log appear the message:
squid_ldap_auth: WARNING, could not bind to binddn 'Invalid credentials'

Follows my squid.conf


http_port 3128
cache_mem 512 MB
cache_swap_low 80
cache_swap_high 90
maximum_object_size 512 MB
minimum_object_size 0 KB
maximum_object_size_in_memory 4096 KB
cache_replacement_policy heap LFUDA
memory_replacement_policy heap LFUDA
quick_abort_min -1 KB
detect_broken_pconn on
fqdncache_size 1024
refresh_pattern ^ftp:    1440    20%    10080
refresh_pattern ^gopher:    1440    0%    1440
refresh_pattern -i (/cgi-bin/|\?) 0 0%     0
refresh_pattern .        0    20%    4320
access_log /var/log/squid3/access.log
cache_log /var/log/squid3/cache.log
cache_dir aufs /var/spool/squid3 600 16 256

auth_param basic program /usr/lib/squid3/squid_ldap_auth -R -b “dc=empresa,dc=com,dc=br” -D “cn=Administrator,dc=empresa,dc=com,dc=br” -w "1234" -f sAMAccountName=%s -h 192.168.0.25
auth_param basic children 50
auth_param basic realm Web-Proxy
auth_param basic credentialsttl 1 minute

visible_hostname proxy.empresa.com.br
acl localhost src 192.168.0.54/32
acl SSL_ports port 22 443 563 
acl Safe_ports port 80 8080         
acl Safe_ports port 21         
acl Safe_ports port 443 563         
acl Safe_ports port 70         
acl Safe_ports port 210         
acl Safe_ports port 280         
acl Safe_ports port 488         
acl Safe_ports port 591         
acl Safe_ports port 777
acl Safe_ports port 1025-65535     
acl purge method PURGE
acl CONNECT method CONNECT
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge
acl users proxy_auth REQUIRED
http_access allow users
acl lan src 192.168.0.0/22
http_access allow lan
http_access deny all
error_directory /usr/share/squid3/errors/en
coredump_dir /var/spool/squid3

Márcio

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