Internet Explorer asks user to authenticate? (ISA 2006)

Posted on 2007-08-03
Medium Priority
Last Modified: 2012-08-14

After a clean install of ISA 2006 on a network that had ISA 2004 previously, whenever we try to access a website IE asks the user to authenticate, and apparently it does not authenticate the user, since the authentication box just reappears after inserted the password in the format domain\user.

Here is a high level outline of the configuration:

- ISA has two nicks, one for the internal network (direct contact with DNS, AD and Clients), and another for the DMZ, where it routes to the Internet.

- ISA was a clean install, on the same physical machine where ISA 2004 was (format, clean install)

- ISA 2006 is physically different from the installation of 2004, 2004 was completely on the DMZ, 2006 connects to both the DMZ and the Internal network.

- The previous installation publicized the proxy address for IE through AD Policies

- The address that clients use for the proxy change since now it is directly reachable from their network.

- I've set up at this stage only a simple rule that allows HTTP,HTTPS access from internal to external (DMZ is considered external) for all users.

What could be causing the authentication box in IE when users try to access the Internet? this happens on customers with and without the Firewall Client.
Question by:Menshen

Accepted Solution

Nyah247 earned 2000 total points
ID: 19636101
Turn off authentication requirement and/or enable integrated authentication.  

Also there is a good troubleshooting page here:


It is for 2004 but should also apply to 2006

Expert Comment

ID: 20106455
Forced accept.

EE Admin

Featured Post

New feature and membership benefit!

New feature! Upgrade and increase expert visibility of your issues with Priority Questions.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

There are several problems reported according slow link speeds or poor performance in TMG 2010, UAG 2010 or ISA 2006. I want to collect here some of the common issues together to give a brief overview what can be the reason. Nevertheless, not all of…
Common practice undertaken by most system administrators is to document the configurations and final solutions of anything performed by them for their future use and reference. So here I am going to explain how to export ISA Server 2004 Firewall pol…
As many of you are aware about Scanpst.exe utility which is owned by Microsoft itself to repair inaccessible or damaged PST files, but the question is do you really think Scanpst.exe is capable to repair all sorts of PST related corruption issues?
With just a little bit of  SQL and VBA, many doors open to cool things like synchronize a list box to display data relevant to other information on a form.  If you have never written code or looked at an SQL statement before, no problem! ...  give i…
Suggested Courses

850 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question