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Krb_ap_err_modified Error From The Server This Indicates

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Ensure that the target SPN is only registered on the account used by the server. PRTG is easy to set up & use. x 130 EventID.Net This event can occur if you setup multiple NETBIOS names for the same computer. Ensure that the service on the server and the KDC are both configured to use the same password. have a peek here

There were also communication problems with Kerberos, SPN (even though the SPN was set correctly in schema) recprds, and NLTEST was always unsuccessful. We did revisit the problem a few days after the fix, and it came down to user permissions. 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. To fix this problem, the first step is to identify all machines listed in the error above. https://social.technet.microsoft.com/Forums/office/en-US/1712db04-0dd3-4f94-9f7c-a28daf9382c9/the-kerberos-client-received-a-krbaperrmodified-error?forum=winserverDS

The Kerberos Client Received A Krb_ap_err_modified Error From The Server Cifs

Not the answer you're looking for? Custom search for *****: Google - Bing - Microsoft - Yahoo Feedback: Send comments or solutions - Notify me when updated Printer friendly Subscribe Subscribe to EventID.Net now!Already a subscriber? So, going back to our cryptic Kerberos Error message, we can search around our brains and the internet and gather a list of the usual suspects:* DNS is incorrect: we are Since it had not replicated...well...ever, the datacenter DCs had considered the DR DCs info as tombstoned and didn't want to replicate it back, there was some magic to be done with

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 Privacy Policy Site Map Support Terms of Use The target name used was HTTP/$servername$.$domain$.com.au. Resetting The Secure Channel Pw Of A Broken Domain Controller This long term key (in a roundabout way) is the Server's Domain Trust Account.

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 This Indicates That The Target Server Failed To Decrypt The Ticket Provided By The Client In either case, I'm sure that at some point we've all seen the dreaded "The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server SERVER01$" with some stuff about SPNs (full I would also reccomend to configure your DHCP to dynamically update records, you will need to provide credentials to do this. https://support.microsoft.com/en-us/kb/558115 Comment Submit Your Comment By clicking you are agreeing to Experts Exchange's Terms of Use.

This will catch duplicates in the same forest. The Kerberos Client Received A Krb_ap_err_modified Domain Controller This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. So I didn't understand why these errors were suddenly popping up. 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

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

Recommend Us Quick Tip Connect to EventID.Net directly from the Microsoft Event Viewer!Instructions Customer services Contact usSupportTerms of Use Help & FAQ Sales FAQEventID.Net FAQ Advertise with us Articles Managing logsRecommended http://serverfault.com/questions/646840/kerberos-event-4-servername-showing-username This is similar to the problems I had posted for a different environment. The Kerberos Client Received A Krb_ap_err_modified Error From The Server Cifs A quick Google search should reveal much better write-ups than I can do here. The Kerberos Client Received A Krb_ap_err_modified Error From The Server Domain Controller I corrected this problem after realizing that the workstation’s clock was 15 minutes behind the DC.

Client then sends over its TGT back to the KDC and gets a brand spanking new service ticket - which contains information that both the Client and Server will be able navigate here So the KRB_AP_ERR_MODIFIED error is coming from both DCs at the main office, not specific to one pc. To correct the situation, delete the incorrect PTR entry in DNS, and then have the offending computer re-register itself in DNS using “ipconfig /registerdns” or by rebooting the client computer. Reply ↓ David Sornig August 11, 2015 at 1:24 pm Thank you for your reply. The Kerberos Client Received A Krb_ap_err_tkt_nyv Error From The Server Host

An example of English, please! 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 How does the server know that the Service Ticket that it was sent is valid. Check This Out x 8 Anonymous This event will occur if you present a service ticket to a principal (target computer) which cannot decrypt it.

Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the The Target Name Used Was Cifs x 204 Anonymous In my case, I was receiving this error on a domain controller. After renaming a server and setting up a new one with the same name the host-entry was not updated and so the new server pointed to the IP address of the

x 120 Anonymous We had this problem when updating the SPN value of the computer account in AD for our EMC storage.

This immediately resolved the issue and had the extra benefit of also resolving some replication issues. View -> Tree. Connection -> Connect. Event Id 4 Krb_ap_err_modified Subscribe to our monthly newsletter for tech news and trends Membership How it Works Gigs Live Careers Plans and Pricing For Business Become an Expert Resource Center About Us Who We

Get Your Free Trial! Strange...so I tried the FQDN: "net use \server01.domain.local" and got the same error message. Each machine that is joined to the domain has a long term key that is used in Step 2. this contact form This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server.

asked 1 year ago viewed 9680 times active 1 year ago Visit Chat Related 0Event ID 4 Kerberos3Use a preferred username but authenticate against Kerberos principal2RPCSS kerberos issues on imaged Windows There are two fixes for this scenario: 1.Access the server by the FQDN (e.g. In the main window, you should see something like "Getting 1 entries:" and then it would list out. Please ensure that the target SPN is registered on, and only registered on, the account used by the server.

If you find some, identify which is the current correct A record and IP. Run the following command specifying the name of a GC as “GCName”. I had replaced those machines a week ago, and everything seemed to work fine. 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

It appears that the EMC computer account needed to be re-registered in the domain to avoid the situation in which a client was not able to connect to the storage via x 15 Private comment: Subscribers only. 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. Download a copy of the IIS 6.0 resource kit.

Use either your own credentials or any service account. Before we get into the usual suspects and how this error came about, let's get a little bit of insight into Kerberos and what this message means.So how does Kerberos work, The issue solved enabling scavenging on all reverse zones and purging old records. Bottom line, the SPN needs to be set on the appropriate object.

N(e(s(t))) a string Why is JK Rowling considered 'bad at math'? 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. Deleting the old machine account from AD resolved the problem. The SBS server was the only DC in the domain.

It returns they same as yours does in the article. As mentioned, it happend for all member servers in this subnet starting in the same night. All rights reserved. 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.