Home > Error From > Krb_ap_err_modified Error From The Server Computer

Krb_ap_err_modified Error From The Server Computer

Contents

This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. Download a copy of the IIS 6.0 resource kit. It sounds like you had the SPN set on the computer's object in AD that was running the service. Images and Photos Web Graphics Software Xpdf - PDFfonts - Command Line Utility to List Fonts Used in a PDF File Video by: Joe In this seventh video of the Xpdf have a peek here

This new DC/DHCP server was not configured with these DHCP credentials, so all the other DHCP servers could not update A records that this new DHCP server had registered. How to find positive things in a code review? x 8 Anonymous This event will occur if you present a service ticket to a principal (target computer) which cannot decrypt it. I am unsure whether these 2 are linked. ============== Server details: Win 2008 r2 Physical Server Host Symantec Backup App ============== Please advise. original site

The Kerberos Client Received A Krb_ap_err_modified Error From The Server Cifs

Ensure that the service on the server and the KDC are both configured to use the same password. Here are some related links below that might be helpful to you: The kerberos client received a KRB_AP_ERR_MODIFIED error Between DC after Primary DC migrated to VM http://social.technet.microsoft.com/Forums/windowsserver/en-US/8c9a71d8-7490-47f4-b0e4-69695b0aa3a7/the-kerberos-client-received-a-krbaperrmodified-error-between-dc-after-primary-dc-migrated-to-vm?forum=winserverDS Kerberos KRB_AP_ERR_MODIFIED error The name of the target server is mistakenly resolved to a different machine. Therefore I wrote this article to summarize the problem and possible solutions to the error.

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 Next, verify that the client reporting the error can correctly resolve the right IP address for the client in question. 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 Resetting The Secure Channel Pw Of A Broken Domain Controller I am quite certain I'll learn a lot of new stuff right here!

Under the advanced tab, you'll want to enter credentials for the DHCP service to use when updating the DNS server. This Indicates That The Target Server Failed To Decrypt The Ticket Provided By The Client 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 Only the KDC (Domain Controllers) and the target machine know the password. Discover More Write the text yourself, as a copy-paste can give problems (I suspect the Unicode-formatting to be different on some webpages).

Lesson of this was to not only check DNS for duplicate/stale dns entries but to also check the local hosts file as well. The Target Name Used Was Cifs As mentioned, it happend for all member servers in this subnet starting in the same night. Duplicate SPNs will break things. I corrected this problem after realizing that the workstation’s clock was 15 minutes behind the DC.

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

The problem is that the error can come from in a couple of reasons. http://peter-kline.com/?p=1 x 204 Anonymous In my case, I was receiving this error on a domain controller. The Kerberos Client Received A Krb_ap_err_modified Error From The Server Cifs What is the difference (if any) between "not true" and "false"? The Kerberos Client Received A Krb_ap_err_modified Error From The Server Domain Controller Kio estas la diferenco inter scivola kaj scivolema?

The applications running on those computers where throwing a wobbler as well. navigate here x 226 EventID.Net A client computer may receive the following event when the computer tries to connect to a clustered network name that has Kerberos enabled. 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. If the server can decrypt the ticket, the server then knows that it was encrypted by a trusted source (the DC) and the presenter (the client) is also trusted. The Kerberos Client Received A Krb_ap_err_tkt_nyv Error From The Server Host

This will catch duplicates in the same forest. Marked as answer by Amy Wang_Microsoft contingent staff, Moderator Monday, October 21, 2013 1:10 AM Edited by Amy Wang_Microsoft contingent staff, Moderator Monday, October 21, 2013 1:11 AM Tuesday, October 15, Join & Ask a Question Need Help in Real-Time? Check This Out share|improve this answer answered May 18 '15 at 21:12 Ryan Bolger 9,68322237 Thanks Ryan.

The reason everything worked fine initially was because that port had been left disconnected until 2 days ago when I configured the correct IP address. Reset Secure Channel Password Domain Controller Open the file and search for all occurrences of the name list in the error 4 (omitting the $). The target name used was cifs/dc01.local.

Has anyone seen this problem with the username appearing here before?

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. 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. Comment Submit Your Comment By clicking you are agreeing to Experts Exchange's Terms of Use. Krb_ap_err_modified Domain Controller At that moment I realized that I had changed the IP address of an adapter on PC-BLA10 because it conflicted with PC-BLA09.

A workstaton was named the same in two sites, causing the second machine (when it had finished our automated build) to be tombstoned from the domain (no-one could logon to the x 2 Anonymous In my case, running dfsutil /purgemupcache fixed the problem. x 15 Private comment: Subscribers only. this contact form We are looking forward to hearing from you.

As for deleting the cached credentials, this action will force the machine to synchronize the newest credentials with PDC when an authentication is needed. x 222 Max Symanovich When we have reinstalled a machine with a different name but the same IP address, we saw this error on client machines when they tried to connect Remember, this shouldn't be necessary if you're allowing Dynamic Updates in DNS and you're a domain-only network. 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.

Normally the service ticket is encrypted using the shared secret of the machine Go to Solution 3 Comments LVL 35 Overall: Level 35 Windows Server 2003 17 Message Assisted Solution What is the 'dot space filename' command doing in bash? There were also communication problems with Kerberos, SPN (even though the SPN was set correctly in schema) recprds, and NLTEST was always unsuccessful. 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.

FOO.DomainB.Com). 2.Delete the potentially unused server account (e.g. For some reason the server that it is reporting is the user that is running the service. Login here! Good luck for the next!

We did revisit the problem a few days after the fix, and it came down to user permissions. LEARN MORE Suggested Solutions Title # Comments Views Activity I want to make an encrypted backup of a MacBook Pro to MS OneDrive for business, Plz help 5 30 133d Licensing This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server.