Endian lost by filter groups

[Guest]

[ricardo.claus]

Gentlemen,
I'm having difficulty resolving the issue below.
The Endian is not filtering the accesses by AD groups.
Until then everything was working.
I'm using 2.5.2 Endian

In the logs I see these errors:

# tail -f /var/log/squid/cache.log
Could not lookup name int-1
Could not convert sid  to gid
Could not get groups for user usertest

The wbinfo -u command does not return anything.
I believe it is a winbind configuration.
Could someone help me?

[ricardo.claus]

Through the web interface when I try again to enter the Endian in the field, I get this error:

Failed to join domain: failed to connect to AD: Strong(er) authentication required