Avatar of StBenet
 asked on

The KDC encountered duplicate names

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

Avatar of undefined
Last Comment

8/22/2022 - Mon

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question

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.