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What type of authentication requirements do you have set on the websites? &nbsp;If you don't have integrated Windows authentication enabled, then enable that and see if it resolves your issue.
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What type of authentication requirements do you have set on the websites?  If you don't have integrated Windows authentication enabled, then enable that and see if it resolves your issue.

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I have some internal websites to my corporation. My issue is that when I use an address that is strictly the server name everything is fine. &nbsp;But when I use the fully qualified internal domain name it requires me to authenticate. &nbsp;When I authenticate it works fine, I just don't want to have to do that.<br />
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<a href="http://" rel="ugc nofollow">http://</a>&lt;servername&gt; = no problem<br />
<a href="Http://" rel="ugc nofollow">Http://</a>&lt;servername&gt;.&lt;internaldoma<wbr />in&gt;.net = requires me to authenticate
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I have some internal websites to my corporation. My issue is that when I use an address that is strictly the server name everything is fine.  But when I use the fully qualified internal domain name it requires me to authenticate.  When I authenticate it works fine, I just don't want to have to do that.

http://<servername> = no problem
Http://<servername>.<internaldomain>.net = requires me to authenticate

Internal website

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.

Windows Server 2012

iis6

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

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.