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Are they DCs? &nbsp;Remove one of them from the network via cable first. &nbsp;Hope it wasn't a DC and delete the second entry from AD servers group. &nbsp;If it was a DC you could be subjected to repeated DNS, authentication issues, GPOs updating and more.
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Are they DCs?  Remove one of them from the network via cable first.  Hope it wasn't a DC and delete the second entry from AD servers group.  If it was a DC you could be subjected to repeated DNS, authentication issues, GPOs updating and more.

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Why would the domain allow someone to hound a host that already exists? Surely that's asking for trouble?
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Why would the domain allow someone to hound a host that already exists? Surely that's asking for trouble?

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they always have, just like that have always let you introduce duplicate IPs to the environment. &nbsp;They figure that you know what you are doing being the end all.
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they always have, just like that have always let you introduce duplicate IPs to the environment.  They figure that you know what you are doing being the end all.

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<div class="content wysiwyg-content">
Hi all,<br />
<br />
My colleague just managed to build a new server and join it to the domain as the same host name. This has just knocked the existing server off the domain and I cannot log on to the server as the local administrator either. <br />
<br />
2008 server<br />
<br />
Any ideas?
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Hi all,

My colleague just managed to build a new server and join it to the domain as the same host name. This has just knocked the existing server off the domain and I cannot log on to the server as the local administrator either. 

2008 server

Any ideas?

2008 duplicate hist name added to server - now cannot log onto (!)

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

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.