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tdbrennan
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kerberos error 4

Experts,
   i get the following error on a hyper-v SBS 2008 machine that is acting as our AD, DC, Exchange server:

"The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server WKS43$. The target name used was RPCSS/WKS27.domain.local. This indicates that the target server failed to decrypt the ticket provided by the client. This can occur when the target server principal name (SPN) is registered on an account other than the account the target service is using. Please ensure that the target SPN is registered on, and only registered on, the account used by the server. This error can also happen when the target service is using a different password for the target service account than what the Kerberos Key Distribution Center (KDC) has for the target service account. Please ensure that the service on the server and the KDC are both updated to use the current password. If the server name is not fully qualified, and the target domain (DOMAIN.LOCAL) is different from the client domain (DOMAIN.LOCAL), check if there are identically named server accounts in these two domains, or use the fully-qualified name to identify the server."

The part that confuses me is that WKS43$ is another workstation, not a server.  I am an admittedly under qualified admin and can't find what this means or how to deal with it.  Any help would be much appreciated.

Windows Server 2008Active Directory

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tdbrennan

8/22/2022 - Mon
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Kenan

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tdbrennan

ASKER
Kenan,
          thank you for your response and suggestion.  I've done what you suggested.  Do you have any suggestions as to how to recreate the situation that triggered the error?  Does it happen at login?  
Kenan

Computer account have passwords just like users. The difference is that computers are the one that randomly generate their own passwords and then they send it to domain controller. This password is changed every 15 days or more (depending on the version of Windows you are using). If you really want to recreate this problem, disconnect the computer from network for 15 or more days. Faster method would be to change system time to some later date.
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Awinish

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tdbrennan

ASKER
Kenan, i did as you suggested (resetting the computer accounts AD users and computers.  The error is still showing up.

Awinish, which computer would you suggest i remove and rejoin?  in my example, would i remove and rejoi wks43 or wks27?
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rwheeler23
tdbrennan

ASKER
Thank you for the help!