seem to be the ldap authentication that make the failure, but i don't understand why. My user are first authenticated(LDAP) then they access https web site, and when the certificate download occur, squid return a 407 error. Is the certificate validation is a separate process that doesn't ask for squid authentication? Thanks -- View this message in context: http://n4.nabble.com/squid-https-certificate-validation-failed-tp1586483p1587469.html Sent from the Squid - Users mailing list archive at Nabble.com.