What version are you running? 1.5.1 What's the URL of the page containing the problem? company internal url... IT looks like there is no place to add a client certificate for ldaps support. My company requires all LDAP auth to be done over ldap with a certificate. ldap.set_option(ldap.OPT_X_TLS_CACERTFILE, '/path/to/my/CAcert'); is needed in the accounts/backends.py script to support this.