See ME558115 for additional information about this event. Each time the KDC receives a request for a service ticket, it first does an explicit search to see if there is an account with the requested SPN in the directory. Deleting the old machine account from AD resolved the problem. Event Details Product: Windows Operating System ID: 4 Source: Microsoft-Windows-Security-Kerberos Version: 6.0 Symbolic Name: KERBEVT_KRB_AP_ERR_MODIFIED Message: The kerberos client received a KRB_AP_ERR_MODIFIED error from the server %1. click here now
Configure delegation trust for the Application Pool account, Frontend- and SQL servers Configure http Service Principal Names (SPN) for the Frontend server NETBIOS-name and FQDN and bind it only to the Simply remove these so you only have one IP address per server and one server per IP address (use the sort on the DNS Manager to find duplicates). Encyclopedia of mathematics (?) How do you remove a fishhook from a human? This indicates that the target server failed to decrypt the ticket provided by the client.
I am quite certain I'll learn a lot of new stuff right here! Run the following command specifying the name of a GC as “GCName”. If there are no matches, the KDC then checks to see if the service component (HTTP in this case) is listed in the spnMappings attribute. Security-kerberos Event Id 4 Domain Controller 2008 Read the section marked: "Kerberos Authentication Requires SPNs for Multiple Worker Processes".
This documentation is archived and is not being maintained. We only need the following to be done Get a static IP address for all our servers and make sure the DNS zone (forward & reverse) do not have duplicate entries. To perform this procedure, you must be a member of the Domain Admins group, or you must have been delegated the appropriate authority. https://blogs.technet.microsoft.com/dcaro/2013/07/04/fixing-the-security-kerberos-4-error/ There were also communication problems with Kerberos, SPN (even though the SPN was set correctly in schema) recprds, and NLTEST was always unsuccessful.
If the machine is not in same domain as the client reporting the error, verify that a duplicate computer does not exist in the local domain with the same name as Event Id 4 Exchange 2013 And remember the replication delay for other DNS servers and the DNS-timeout on clients before testing â€“ better wait a couple of minutes (or up to 30 min. x 238 Vlastimil Bandik I was experiencing issues with NETLOGON, SPN records, Kerberos, NLTEST, and connections beetwen servers and domain controllers. Email Reset Password Cancel Need to recover your Spiceworks IT Desktop password?
To resolve this issue, you should use Active Directory Users and Computers to delete the originalÂ computer account that is no longer used. http://serverfault.com/questions/689918/security-kerberos-error-event-id-4 My first step was to search Active Directory for an object which had the http/webmail.customer.com SPN adfind: adfind -f "servicePrincipalName=http/webmail.customer.com" -gcb I came up empty, though. Security Kerberos Event Id 4 Domain Controller Yes No Additional feedback? 1500 characters remaining Submit Skip this Thank you! Event Id 4 Security-kerberos Spn Note that the above is one line wrapped for readability.
Update: After this blog-entry I had an article published that gives an overview of Kerberos in a Sharepoint environment Update 23/12-2008: On Windows Server 2008 the IIS7 uses Kernel mode authentication his comment is here Lesson of this was to not only check DNS for duplicate/stale dns entries but to also check the local hosts file as well. If this happens you need to reset and rebuild this. Attempt a net use then check the NetBIOS cache (nbstat -c) and the DNS cache (ipconfig /displaydns). Event Id 4 Security Kerberos Windows 7
Join the community Back I agree Powerful tools you need, all for free. Check ADUC for the identical A record machine names, for example if you see ComputerA and ComputerB both on 192.168.1.10 - one of these is out of date, and could be DomainB\FOO does not have the same password as DomainA\FOO, so it cannot decrypt the service ticket. http://twaproductions.com/event-id/event-id-7-kerberos-pac.html Is investing a good idea with a low amount of money?
Does SQL Server cache the result of a multi-statement table-valued function? Event Id 4 Network Link Is Down This can occur when the target server principal name (SPN) is registered on an account other than the account the target service is using. Not the answer you're looking for?
Ensure that the target SPN is only registered on the account used by the server. Help Desk » Inventory » Monitor » Community » C++ programming on Cloud 9 Search Primary Menu Skip to content Sample Page Search for: 2583, 2659, 4586 The kerberos client It can give some insight for other scenarios as well. Microsoft Windows Security Kerberos Event Id 3 In the event log of the server having this issue, event ID 4 appears with this message: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server gnserver$.
Remove the ones that are not on the Application Pool Account. Resolve Delete an unused computer account by using Active Directory Users and Computers A Kerberos ticket is encrypted by using theÂ client computerÂ account's password for the resulting encryption used on the ticket.Â If The first one was that someone fixed it by taking the computer out of the domain, renaming it, changing the SID, and changing the IP address. navigate here See EV100437 (Symantec TECH207085).
x 14 Dan Bartels To resolve the problem I removed the offending system completely from the Domain, removed it's entry in AD, and renamed the machine to a different name before With SPNEGO enabled on the IIS virtual directory, once Kerberos is deemed possible, we can’t fall back to NTLM. To resolve this issue, you should use Active Directory Users and Computers to delete the originalÂ computer account that is no longer used. Now once in hour aditional Domain controller IIS2 is making these errors to event log: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server iis2$.