<div>
See this for possible causes.<br />
KB923579<br />
KB956531<br />
KB825230<br />
KB927612<br />

</div>


See this for possible causes.
KB923579
KB956531
KB825230
KB927612


<div>
Check the default settings for virtual directories in Exchange Server 2007<br />
<a href="http://msexchangeteam.com/archive/2008/02/01/447989.aspx" rel="ugc">http://msexchangeteam.com/archive/2008/02/01/447989.aspx</a><br />
<br />
Specifically for /Autodiscover - Authentication &quot;Basic &amp;&nbsp;Integrated&quot; should be selected.
</div>


Check the default settings for virtual directories in Exchange Server 2007
http://msexchangeteam.com/archive/2008/02/01/447989.aspx [http://msexchangeteam.com/archive/2008/02/01/447989.aspx]

Specifically for /Autodiscover - Authentication "Basic & Integrated" should be selected.

<div>
See another related post<br />
<a href="http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/6963d031-9815-429c-8cae-78e2c038352b" rel="ugc nofollow">http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/6963d031-9815-429c-8cae-78e2c038352b</a>
</div>


See another related post
http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/6963d031-9815-429c-8cae-78e2c038352b [http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/6963d031-9815-429c-8cae-78e2c038352b]

<div>
<div class="content wysiwyg-content">
Server 1: W2K3 STD - A.D., Terminal Server<br />
Server 2: W2K3 x64 STD - Exchange 2007 (fully up to date)<br />
<br />
I have a major issue where any new Outlook 2007 client I set up on any pc on the network will not authenticate. Initially it will discover the users settings automatically and start the process, but it then grinds to a halt and asks for a username and password (even though the user is logged on to the domain). The correct credentials do not work.<br />
<br />
When the logon box appears it has &quot;domain\user&quot; filled correctly. If, however, I remove the domain and try just the user name and password, it reappears with &quot;exchange server\user&quot;, which I find odd.<br />
<br />
Anyway, I'd be very happy if anyone could help me shed some light on this,<br />
<br />
Cheers,<br />
Gab<br />

</div>
</div>


Server 1: W2K3 STD - A.D., Terminal Server
Server 2: W2K3 x64 STD - Exchange 2007 (fully up to date)

I have a major issue where any new Outlook 2007 client I set up on any pc on the network will not authenticate. Initially it will discover the users settings automatically and start the process, but it then grinds to a halt and asks for a username and password (even though the user is logged on to the domain). The correct credentials do not work.

When the logon box appears it has "domain\user" filled correctly. If, however, I remove the domain and try just the user name and password, it reappears with "exchange server\user", which I find odd.

Anyway, I'd be very happy if anyone could help me shed some light on this,

Cheers,
Gab


Exchange 2007/Outlook Authentication Failure

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.