IIS6 & Integrated windows authentication prompts login window !!!

Posted on 2007-10-03
Last Modified: 2012-08-14
We have an intranet application running on

We have deployed this application in a server belonging to domain. We have configured this application to use integrated windows authentication.

We have configured this application in (NetBIOS name DOMAIN).
Windows 2003 SP2 & IIS6.

We have created one more DNS entry pointing to

We have configured the website for on
And I have placed a header

Our users PCs are in (NetBIOS name DOMAIN).Whenever user types in IE they are prompted for login window, it never consider integrated windows authentication. When I enter DOMAIN\myuserid and password it comes up with the website.

But when we try to access the application using (we have configured this application default website and configured & as host headers), no auth prompt is shown; users are directly logged into the application

Ideally, when we try to access the authentication prompt should not have come and users should be seamlessly logged into the application. What is the resolution of this problem?

Our users in (NetBIOS name DOMAIN) should be able to access without any prompt (it should use integrated windows authentication).

Question by:moorthy_kulumani
    LVL 51

    Expert Comment

    I'm assuming you are using IE, Firefox doesn't have a fix for this and will always show a prompt dialog.

    Any in IE if you look at the bottom right of IE it shows an icon for the current zone.  Intranet, Trusted or Internet are the standard three.  By default the automatic login for username and password will ONLY work for Intranet (local) sites.  However, for IE to decide that you are local is that the domain of the computer and the website have to be the same! (Which yours are not)

    The only way to fix this is to change the IE policy settings so that the website is trusted and to autologon onto trusted sites.
    LVL 26

    Accepted Solution

    Try to run this on your iis machine

    cscript C:\Inetpub\AdminScripts\adsutil.vbs set w3svc/NTAuthenticationProviders "NTLM"
    LVL 7

    Assisted Solution

    I edited my group policy to add our intranet site to the tusted intranets. I do not get prompted for a username or password unless i am off site.
    LVL 51

    Assisted Solution

    I want to change my answer for FireFox.  There is a solution!

    - In the Address bar type about:config then [Enter]
    - A filter Window will appear with configuration settings
    - Type NTLM in the filter Window
    - double click on network.automatic-ntlm-auth.trusted-uris
    - Enter your domain that you want to automatically log into


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