I am currently running my network over a Cisco Meraki site to site VPN network. I currently have 4 sites, and all sites are connected to the site to site VPN and working without issue.
I am trying to setup a domain trust with one of my sites but for whatever reason when I try to setup the trust with the 4th location it wont connect telling me that "The operation failed. The error is: The specified account already exists."
I have looked in the active directory to see if either of the server names are in each others active directory and I do not see them (I have even searched for it and no luck). I have conditional forwarders setup for each of the sites. I have done a decent amount of googling on this issue and cant seem to find any resolution. I am hoping that someone else has experienced this issue and can explain to me how to resolve the issue.
To recap:
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I have 4 sites that are all connected to a site to site vpn (working flawlessly)
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I am trying to create a domain trust with a specific server
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3 of the 4 domain trusts connected to this server without issue
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I have setup the conditional forwarders inside of DNS for all the servers. ( I have also setup each server as a forwarder in DNS properties)
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Getting error "The operation failed. The error is: The specified account already exists."
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The server OS is Server 2008 R2
Hopefully I didnt leave out any information needed, but if I have, please ask and I will provide it.
Best Answer
the root cause has been marked BOLD. Searching one of the domains a computer with same name as the other domain netbios name was found.