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StBenet
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The KDC encountered duplicate names

Hi
We are getting the following error " event ID 11 The KDC encountered duplicate names while processing a Kerberos authentication request" on our DC (see attached text file).  I've found the duplicate entry using "setspn -X" (see attached jpeg) however the duplicate entry is a user "Administrator" and not a computer.  I can use "setspn -D" to delete the entry but I'm unsure what the SPN and computer name would be.  I've never had to do this before and I don't know what the consequences are if I get it wrong. Can anyone help please.

Thank you in advance. MAGPIE-ERROR.txt Duplicate entry screenshot
Windows Server 2008

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StBenet

8/22/2022 - Mon
ASKER CERTIFIED SOLUTION
-tjs

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StBenet

ASKER
Hi
Deleted CN=Administrator without any problems.  Many thanks, your explanation was excellent. The $ on the end of the computer name is one to remember, haven't seen that mentioned on any other sites.
Your help has saved me hundreds of hours of internet surfing.
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