Krb_ap_err_modified Error From The
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Resetting The Secure Channel Pw Of A Broken Domain Controller
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 ervice 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. These servers have no routing to the local Domain Controllers, instead they contact the DCs at the main office. So the KRB_AP_ERR_MODIFIED error is coming from both DCs at the main office, not specific to one pc. Effects that i have: - no logon with RDP possible (wrong username or password) - Service which Relay on Kerberos Auth hav
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The Target Name Used Was Cifs
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on a client's server the other day and I finally decided I would look at and resolve http://peter-kline.com/?p=1 one of the more common error messages I see when I'm working on a remediation project: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server reception-win7$. The http://www.eventid.net/display-eventid-4-source-Kerberos-eventno-1968-phase-1.htm target name used was cifs/ceo-computer.domain.local. This indicates that the target server failed to decrypt the ticket provided by the client. This can occur when the target server error from principal name (SPN) is registered on an account other than the account the target service is using. The message evaded me for quite a long time - it seemed to indicate a mismatch in computer names, but I knew quite well both were properly joined to the domain. I wondered what would happen if I error from the tried a basic operation on the target machine? C:\System>dir \\ceo-computer\c$ Logon Failure: The target account name is incorrect. Interesting - something was going on with the account for ceo-computer$ I wonder if the machine is online and resolves to an IP address? C:\System>ping -n 1 ceo-computer Pinging ceo-computer.domain.local [10.0.0.36] with 32 bytes of data: Reply from 10.0.0.36: bytes=32 time<1ms TTL=128 Interesting - the machine is online. I wonder if they mean the computer account? A quick check would show me the NetBIOS machine name of that host: C:\System>nbtstat -A 10.0.0.36 Local Area Connection: Node IpAddress: [10.0.0.2] Scope Id: [] NetBIOS Remote Machine Name Table Name Type Status ------------------------------ RECEPTION-WIN7 <00> UNIQUE Registered DOMAIN <00> GROUP Registered RECEPTION-WIN7 <20> UNIQUE Registered DOMAIN <1E> GROUP Registered MAC Address = 00-0F-FB-F3-CF-73 And there we have it. When I issue the DIR command for the above UNC, it looks up the SPN for that machine and then looks the machine name up in DNS.
Add-on Build a great reporting interface using Splunk, one of the leaders in the Security Information and Event Management (SIEM) field, linking the collected Windows events to www.eventid.net. TheEventId.Net for Splunk Add-onassumes thatSplunkis collecting information from Windows servers and workstation via the Splunk Universal Forwarder. read more... Event ID: 4 Source: Kerberos Source: Kerberos Type: Error Description:The kerberos client received a KRB_AP_ERR_MODIFIED error from the server