Krb_ap_err_modified Error From The Server
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This Indicates That The Target Server Failed To Decrypt The Ticket Provided By The Client
> Directory Services Question 0 Sign in to vote Hi, since the kerberos client received a krb_ap_err_modified error from the server domain controller one night i receive the following error message on all member Server in a branch office for a the kerberos client received a krb_ap_err_tkt_nyv error from the server host special subent. Other Member server i a different subnet are not getting these errors. Before those member servers (new setup) worked fine for about 2-3 Month: Log Name:
The Kerberos Client Received A Krb_ap_err_modified Domain Controller
System Source: Microsoft-Windows-Security-Kerberos Date: 09.10.2013 02:47:27 Event ID: 4 Task Category: None Level: Error Keywords: Classic User: N/A Computer: server Description: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server dc01$. The target name used was cifs/dc01.local. This indicates that the target server failed to decrypt the ticket provided by the client. This can occur when the
Resetting The Secure Channel Pw Of A Broken Domain Controller
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 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:
CaroJuly 4, 20130 Share 0 0 While I was building my lab environment with the preview of System Center 2012 R2, I’ve encountered an interesting the target name used was cifs issue regarding the data warehouse behavior. Basically, the issue I
The Kerberos Client Received A Krb_ap_err_modified Error From The Server Sql
had was that my Data Warehouse jobs would fail to complete. At the same time, in event id 4 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: 4 Task Category: None Level: Error Keywords: https://social.technet.microsoft.com/Forums/office/en-US/1712db04-0dd3-4f94-9f7c-a28daf9382c9/the-kerberos-client-received-a-krbaperrmodified-error?forum=winserverDS 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 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 https://blogs.technet.microsoft.com/dcaro/2013/07/04/fixing-the-security-kerberos-4-error/ 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 (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.
on a client's server the other day and I finally decided I would look at and resolve one of the more common error messages I see when I'm working on http://peter-kline.com/?p=1 a remediation project: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server reception-win7$. The target name used was cifs/ceo-computer.domain.local. This indicates that the target server failed to decrypt the ticket provided by the client. http://blogs.msmvps.com/vandooren/2009/04/02/the-kerberos-client-received-a-krb-ap-err-modified-error/ This can occur when the target server 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 - error from 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 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 error from the 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. The machine returned the IP address for a different computer, with the destination rejecting the connection because the login account for that computer was incorrect. A quick check showed what I immediately suspected - DHCP was not updating DNS when an DHCP Renew request was processed and was using (very) old values. I fixed DHCP and checked later - viola! - the problem was resolved. This entry was posted in Uncategorized on March 28, 2013 by wpadmin. Post navigation Server Manage
yesterday afternoon: Event Type:ErrorEvent Source:KerberosEvent Category:NoneEvent ID:4Computer:SE-SMURF01Description:The kerberos client received a KRB_AP_ERR_MODIFIED error from the server PC-BLABLA09$. The target name used was . This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. Commonly, this is due to identically named machine accounts in the target realm (FOO.BAR.STRIPE.LOCAL), and the client realm. Please contact your system administrator. Event Type:ErrorEvent Source:KerberosEvent Category:NoneEvent ID:4Computer:SE-SMURF01Description:The kerberos client received a KRB_AP_ERR_MODIFIED error from the server PC-BLA09$. The target name used was RPCSS/PC-BLA10. This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. Commonly, this is due to identically named machine accounts in the target realm (FOO.BAR.STRIPE.LOCAL), and the client realm. Please contact your system administrator. I had replaced those machines a week ago, and everything seemed to work fine. So I didn't understand why these errors were suddenly popping up. The applications running on those computers where throwing a wobbler as well. Some googling later I found 2 remarks that were useful. 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. While this is overkill on the scale of killing a mouse with a thermonuclear weapon, it pointed in the direction of a network level problem. The second remark was by a Microsoft employee who explained that DNS misconfiguration can be the source of problems like this. If kerberos thinks it is communicating with pcA it encrypts the kerb ticket with the password of pcA. but if the ticket then ends up on pcB because of the DNS mismatch, the above events