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Excellent answer. Solved my problem. Not sure I would have checked for &nbsp;Local Intranet Zone
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Excellent answer. Solved my problem. Not sure I would have checked for  Local Intranet Zone

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Hi, I have two Windows2003 AD domains with a two way trust between them.<br />
<br />
In domain A I have a website which I only want specific security groups in each domain to be able to view.<br />
The whole point is that I don't want users in either domain to be prompted for credentials when they visit the site. If they are logged in to the domain then they should be automatically authenticated.<br />
<br />
On the IIS server in domain A, I have configured the website to use integrated Windows authentication&quot; and disabled anonymous access. <br />
<br />
I then added the approved security groups from Domain A and Domain B to the permissions list of the website.<br />
<br />
The solution works well in Domain A. If you are in the correct security group then the website loads automatically.<br />
<br />
However in Domain B, the user is prompted regardless of the fact that they are in an approved security group in IIS.<br />
<br />
How do I have then authenticate automatically?
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Hi, I have two Windows2003 AD domains with a two way trust between them.

In domain A I have a website which I only want specific security groups in each domain to be able to view.
The whole point is that I don't want users in either domain to be prompted for credentials when they visit the site. If they are logged in to the domain then they should be automatically authenticated.

On the IIS server in domain A, I have configured the website to use integrated Windows authentication" and disabled anonymous access. 

I then added the approved security groups from Domain A and Domain B to the permissions list of the website.

The solution works well in Domain A. If you are in the correct security group then the website loads automatically.

However in Domain B, the user is prompted regardless of the fact that they are in an approved security group in IIS.

How do I have then authenticate automatically?

Need help with cross-domain IIS authentication

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.

Microsoft IIS Web Server

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

Microsoft Windows XP is the sixth release of the NT series of operating systems, and was the first to be marketed in a variety of editions: XP Home and XP Professional, designed for business and power users. The advanced features in XP Professional are generally disabled in Home Edition, but are there and can be activated. There were two 64-bit editions, an embedded edition and a tablet edition.