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Client Received A Krb_ap_err_modified Error

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I wondered what would happen if I tried a basic operation on the target machine? Email check failed, please try again Sorry, your blog cannot share posts by email. %d bloggers like this: home| search| account| evlog| eventreader| it admin tasks| tcp/ip ports| documents | Connection -> Connect. Please contact your system administrator. =============================== Thank you 0 Question by:lwjoubert Facebook Twitter LinkedIn Google LVL 7 Best Solution byaboredman Check this: This event will occur if you present a service http://entrelinks.com/client-received/client-received-a-krb-ap-err-modified-error-from-the.php

This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. Send to Email Address Your Name Your Email Address Cancel Post was not sent - check your email addresses! The target name used was cifs/server1.domain.com. Note: The computer account is identified in the event log message.

The Kerberos Client Received A Krb_ap_err_modified Error From The Server Cifs

{{offlineMessage}} Store Store home Devices Microsoft Surface PCs & tablets Xbox Virtual reality Accessories Windows phone Microsoft Band Software Office Windows Additional software Apps All apps Windows apps Windows phone apps Christensen SharePoint and Security Home Troubleshooting the Kerberos error KRB_AP_ERR_MODIFIED 4 Comments Posted by jespermchristensen on June 12, 2008 Important! See ME558115 for additional information about this event. I am having this exact issue.

This will catch duplicates in the same forest. KDC creates a TGT (ticket to get tickets)for Client and sends it over. 2. Remove the account from ADUC. - Note the error mentions both the DC and a client - this error relates to two clients sharing the same IP and both having valid The Kerberos Client Received A Krb_ap_err_modified Domain Controller In the main window, you should see something like "Getting 1 entries:" and then it would list out.

To fix this problem, the first step is to identify all machines listed in the error above. Browse -> Search. The only different is there are multiple Error Events pointing to different servers and target names. https://blogs.technet.microsoft.com/dcaro/2013/07/04/fixing-the-security-kerberos-4-error/ Commonly, this is due to identically named machine accounts in the target realm (DOMAIN.COM), and the client realm.

Here is an example of how this can happen with two identically named machine accounts in separate forests. Resetting The Secure Channel Pw Of A Broken Domain Controller Reply Leave a Reply Cancel reply Enter your comment here... Follow this link to Microsoft Knowledgebase article KB216393 http://support.microsoft.com/kb/216393/en-us for instructions. Before those member servers (new setup) worked fine for about 2-3 Month: Log Name: System Source: Microsoft-Windows-Security-Kerberos Date: 09.10.2013 02:47:27 Event ID: 4 Task Category: None Level: Error Keywords: Classic User:

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

A new DNS zone was then created on the second DC using the zone file from the first DC after the “netdiag /fix”. find more info Please ensure that the service on the server and the KDC are both updated to use the current password. The Kerberos Client Received A Krb_ap_err_modified Error From The Server Cifs When I follow your steps I get the exact results you get above. The Kerberos Client Received A Krb_ap_err_modified Error From The Server Domain Controller x 238 Vlastimil Bandik I was experiencing issues with NETLOGON, SPN records, Kerberos, NLTEST, and connections beetwen servers and domain controllers.

On the direct zone it was correct, but the records on the reverse zones were in some cases 5 years old. Check This Out If the target server has a different password than the DC, the session ticket cannot be decrypted and the failure occurs. However, it will not catch duplicates in different forests. x 67 EventID.Net As per Microsoft: "Kerberos cannot authenticate the Web program user because the server cannot verify the Kerberos authentication request sent by the client. The Kerberos Client Received A Krb_ap_err_tkt_nyv Error From The Server Host

It's the very reason that there are Computer objects in Active Directory, and why you see the "SERVER01$" in the log. This can occur when the target server principal name (SPN) is registered on an account other than the account the target service is using. This caused several A records to have the same IP address registered, causing Event ID 4 when the KDC did not know which client was the right one. Source See ME913327 to see under what conditions this event is received.

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. The Kerberos Client Received A Krb_ap_err_modified Error From The Server Sql Access using the IP was working but by host name not. Privacy Policy Site Map Support Terms of Use Just another IT Guy's Ramblings … I share my thoughts and experiences as a Systems and Network Engineer Menu Skip to content Home

Check It Out Suggested Solutions Title # Comments Views Activity W32Time - 2003 Domain Controller 8 37 104d How can I prevent users from deleting files on a windows server share

If this is you, follow these steps. 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 If your server/client has been cloned you need to generate a new security ID (SID) and the recommended way to do this is to run the Microsoft sysprep-utility. The Kerberos Client Received A Krb_ap_err_modified Error From The Server Exchange English: This information is only available to subscribers.

For some reason the server that it is reporting is the user that is running the service. This is not difficult if domain admin accounts are not isolated/protected and/or delegation is enabled. This solution will help lots of people who have similar issues. http://entrelinks.com/client-received/client-received-a-krb-ap-err-modified-error-from-the-server-1.php You will need rerun in all forest and search the output from each.

Let it settle down over the weekend but never did the nbtstat return just one entry. Effects that i have: - no logon with RDP possible (wrong username or password) - Service which Relay on Kerberos Auth have Problems So when i reboot the server in most The logs on each of thethe CASs was showing this error, and it was occurring on a regular basis...every hour exactly. Example2: Event Type: Error Event Source: Kerberos Event Category: None Event ID: 4 Date: 12/1/2008 Time: 8:51:30 PM User: N/A Computer: SERVER Description: The kerberos client received a KRB_AP_ERR_MODIFIED error from

This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. The user was unable to log on. Good luck for the next! Join the community of 500,000 technology professionals and ask your questions.

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. It only needs read permissions.4. Look for multiple accounts in the domain with the name SRV1. Normally the service ticket is encrypted using the shared secret of the machine account's password as a basis for the encryption used to encrypt the service ticket.

Commonly, this is due to identically named machine accounts in the target realm (DOMAIN.COM), and the client realm. And if none is configured for that account you must of course map the SPN to it. 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. Thanks for helping make community forum a great place.

Monday, October 14, 2013 1:15 AM Reply | Quote Moderator 0 Sign in to vote Hi, sorry, but i dont have