Error Kerberos Event Id 4
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Kerberos Event Id 4 Server 2003
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Event Id 4 Source Kerberos
certification Born To Learn blog Find technical communities in your area Support Support options For business For developers For IT professionals For technical support Support offerings More support Microsoft Premier Online TechNet Forums MSDN Forums Security Bulletins & Advisories Not an IT pro? Microsoft Customer Support Microsoft Community Forums United States (English) Sign in Home Windows Server 2012 R2 Windows Server 2008 R2 Library Forums We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. Kerberos Kerberos Client Kerberos Client Configuration Kerberos Client Configuration Event ID 4 Event ID 4 Event ID 4 Event ID 4 Event ID 5 Event ID 10 TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. Event ID 4 — Kerberos Client Configuration Updated: November 30, 2007Applies To: Windows Server 2008 If the client computers are joined to an Active Directory domain, the Kerberos client is configured to request ticket-grant
CaroJuly 4, 20130 0 0 0 While I was building my lab environment with the preview of System Center 2012 R2, I’ve encountered an interesting issue regarding the data warehouse behavior. Basically, the issue I had was that kerberos event id 3 my Data Warehouse jobs would fail to complete. At the same time, in event id 4 security-kerberos krb_ap_err_modified the event viewer of my systems I had the following error message : Log Name: System Source: Microsoft-Windows-Security-Kerberos Event ID:
The Kerberos Client Received A Krb_ap_err_modified Error From The Server Cifs
4 Task Category: None Level: Error Keywords: Classic User: N/A Computer: SCSMDW.wsdemo.com Description: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server smsvc. The target name used was MSOMSdkSvc/SCSMDW. This indicates that https://technet.microsoft.com/en-us/library/cc733987(v=ws.10).aspx 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. Ensure that the target SPN is only registered on the account used by the server. This error can also happen if the target service account password is different than what is https://blogs.technet.microsoft.com/dcaro/2013/07/04/fixing-the-security-kerberos-4-error/ configured on the Kerberos Key Distribution Center for that target service. Ensure that the service on the server and the KDC are both configured to use the same password. If the server name is not fully qualified, and the target domain (WSDEMO.COM) is different from the client domain (WSDEMO.COM), check if there are identically named server accounts in these two domains, or use the fully-qualified name to identify the server. In my environment, smsvc is the service account that I’m using for Service Manager. However when I looked at my SPN settings, I had the following : C:\Users\Administrator.WSDEMO>setspn -Q MSOMSdkSvc/SCSMDW Checking domain DC=wsdemo,DC=com CN=SCSMDW,CN=Computers,DC=wsdemo,DC=com MSOMSdkSvc/SCSMDW MSOMSdkSvc/SCSMDW.wsdemo.com MSOMHSvc/SCSMDW MSOMHSvc/SCSMDW.wsdemo.com TERMSRV/SCSMDW TERMSRV/SCSMDW.wsdemo.com WSMAN/SCSMDW WSMAN/SCSMDW.wsdemo.com RestrictedKrbHost/SCSMDW HOST/SCSMDW RestrictedKrbHost/SCSMDW.wsdemo.com HOST/SCSMDW.wsdemo.com Existing SPN found! So the situation is that when the Kerberos client tries to validate the authentication, the information he gets from Active Directory are different than the ones that is in the ticket. Solution applied: To solve this issue, I took the following steps: Unregister the bad service entry : setspn –D MSOMSdkSvc/SCSMDW SCSMDW Unregistering ServicePrincipalNames for CN=SCSMDW,CN=Computers,DC=wsdemo,DC=com MSOMSdkSvc/SCSMDW Updated object Register the service entry with the right info
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn http://serverfault.com/questions/646840/kerberos-event-4-servername-showing-username more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to event id the top Kerberos Event 4 servername showing username up vote 0 down vote favorite We have a .Net Windows Service that uses a Httplistener and authenticates requests using Kerberos. When users are connecting via their browser, an error in the users event log shows a Kerberos Event ID 4: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server $username$. The target name used was HTTP/$servername$.$domain$.com.au. This indicates that event id 4 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. Ensure that the target SPN is only registered on the account used by the server. This error can also happen if the target service account password is different than what is configured on the Kerberos Key Distribution Center for that target service. Ensure that the service on the server and the KDC are both configured to use the same password. If the server name is not fully qualified, and the target domain ($domain$.COM.AU) is different from the client domain ($domain$.COM.AU), check if there are identically named server accounts in these two domains, or use the fully-qualified name to identify the server. For some reason the server that it is reporting is the user that is running the service. The first line: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server $username$. Every website (including Server Fault) has fixes for this error to do with SPN problems, but it always has a servername in the error. I cannot find the above message with a username. We have tried different users an