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Krb_ap_err_modified Error From The Server

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REPADMIN and DCDIAG come back clean, with successful replications all over the place. x 126 Anonymous The cause of this problem turned out to be two DCs sharing the same IP address, one of which was offline. WINS was ok, however, reverse DNS had several entries for not only the mail virtual server on the cluster, but the other nodes as well due to previous setting of DHCP Every website (including Server Fault) has fixes for this error to do with SPN problems, but it always has a servername in the error. have a peek here

x 182 Wolfgang Deeken We had this error while accessing a MS Windows Server 2012 file cluster from XP clients. more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science You should keep it up forever! There were also communication problems with Kerberos, SPN (even though the SPN was set correctly in schema) recprds, and NLTEST was always unsuccessful. original site

This Indicates That The Target Server Failed To Decrypt The Ticket Provided By The Client

ldifde -f SPNdump.ldf -s GCName -t 3268 -d dc=forest, dc=root r "(objectclass=computer)" -l servicePrincipalName. Let it settle down over the weekend but never did the nbtstat return just one entry. There was a pre-existing Exchange server that I needed to replicate from but kept getting this error each time I attempted to bring the cluster public folder store online. Please ensure that the service on the server and the KDC are both updated to use the current password.

Based on my research, rebooting the server can force the server to update the latest passwords, and restarting the Kerberos Service will do the same. Overview of what to configure for the Kerberos Kerberos is the recommended authentication method in Sharepoint and we need to catch our breath and see through the confusing error messages that The determinant of the matrix Make an ASCII bat fly around an ASCII moon How do you grow in a skill when you're the company lead in that area? Resetting The Secure Channel Pw Of A Broken Domain Controller The logs on each of thethe CASs was showing this error, and it was occurring on a regular basis...every hour exactly.

I would also reccomend to configure your DHCP to dynamically update records, you will need to provide credentials to do this. The Kerberos Client Received A Krb_ap_err_modified Error From The Server Domain Controller Required fields are marked * Name * Email * Website Comment You may use these HTML tags and attributes:

Reply Leave a Reply Cancel reply Enter your comment here... https://blogs.technet.microsoft.com/dcaro/2013/07/04/fixing-the-security-kerberos-4-error/ Email check failed, please try again Sorry, your blog cannot share posts by email. %d bloggers like this: Digital Analytics Hybrid IT Services Our Work Company DigitalDigital & Applications Retain your

Please ensure that the target SPN is registered on, and only registered on, the account used by the server. The Target Name Used Was Cifs Browse -> Search. Is there anything internal to MOSS that runs as a local service, when does the computer account come in the picture where it needs to use delegation?I would really appreciate if Deleting the old machine account from AD resolved the problem.

The Kerberos Client Received A Krb_ap_err_modified Error From The Server Domain Controller

As with many things, it's not really the resolution, but the journey that is the most interesting aspect of getting to the root cause of the issue in an environment with http://serverfault.com/questions/646840/kerberos-event-4-servername-showing-username If the server name is not fully qualified, and the target domain (local.domain) is different from the client domain (local.domain), check if there are identically named server accounts in these two 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. The Kerberos Client Received A Krb_ap_err_tkt_nyv Error From The Server Host The client presents encrypted session ticket it received from the KDC to the target server.

And remember the replication delay for other DNS servers and the DNS-timeout on clients before testing – better wait a couple of minutes (or up to 30 min. navigate here First of all: It isn't really difficult to configure Kerberos if you know how to do it – and more important: how not to configure it wrong. Run the following command specifying the name of a GC as GCName. And if none is configured for that account you must of course map the SPN to it. The Kerberos Client Received A Krb_ap_err_modified Domain Controller

DNS was set correctly, there was a single SPN, and I wasn't about to rebuild an Exchange server, seeing as everything else seemed to be working, since I was able to At that moment I realized that I had changed the IP address of an adapter on PC-BLA10 because it conflicted with PC-BLA09. If that number is more than 1, then you have a duplicate SPN, and you'll need to either setspn.exe (Part of the Resource Kit tools, or natively in the latest OSs) Check This Out Send to Email Address Your Name Your Email Address Cancel Post was not sent - check your email addresses!

x 64 Anonymous This problem occurred when a user was logged into multiple workstations. The Kerberos Client Received A Krb_ap_err_modified Error From The Server Sql 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. Microsoft Customer Support Microsoft Community Forums {{offlineMessage}} Store Store home Devices Microsoft Surface PCs & tablets Xbox Virtual reality Accessories Windows phone Software Office Windows Additional software Apps All apps Windows

Bottom line, the SPN needs to be set on the appropriate object.

As mentioned, it happend for all member servers in this subnet starting in the same night. 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. Based on my research, rebooting the server can force the server to update the latest passwords, and restarting the Kerberos Service will do the same. Event Id 4 Krb_ap_err_modified The same as 2, where you're trying to authenticate to the cluster, but you're actually authenticating to a node in the cluster, resulting in the above error.

Feynman Lectures for a newcomer Wardogs in Modern Combat How do spaceship-mounted railguns not destroy the ships firing them? Note: It could be that the SPN's are case-sentitive, so check your server- and domain-names just in case! (See Shane Young's blog entry) Computer account secure connectionSome clients/servers fail to setup Pool identity. this contact form 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$.