On Wed, May 15, 2013 at 10:00:18PM -0300, Carlos Defoe wrote: > As far as i know, the only auth mech that will prompt for password is > the basic one, so you're not enabling one per time. > I believed that IE will prompt credentials when using NTLM iff the machine is not part of the domain. It also seems that it will prompt if the proxy is configured for kerberos and basic auth but the machine is not part of the domain so kerberos won't work, in this case the authentication never succeeds (hence why I suggested turning off IWA). Not sure if this behaviour is a bug or desired behaviour. -- Brett Lymn "Warning: The information contained in this email and any attached files is confidential to BAE Systems Australia. If you are not the intended recipient, any use, disclosure or copying of this email or any attachments is expressly prohibited. If you have received this email in error, please notify us immediately. VIRUS: Every care has been taken to ensure this email and its attachments are virus free, however, any loss or damage incurred in using this email is not the sender's responsibility. It is your responsibility to ensure virus checks are completed before installing any data sent in this email to your computer."