A Krb_ap_err_modified Error From The Server This Indicates That
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One games Xbox 360 games PC the kerberos client received a krb_ap_err_modified error from the server cifs games Windows games Windows phone games Entertainment All
This Indicates That The Target Server Failed To Decrypt The Ticket Provided By The Client
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The Kerberos Client Received A Krb_ap_err_tkt_nyv Error From The Server Host
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One games Xbox 360 games PC
The Kerberos Client Received A Krb_ap_err_modified Error From The Server Spn
games Windows games Windows phone games Entertainment All
The Target Name Used Was Cifs/
Entertainment Movies & TV Music Business & Education Business Students & reset secure channel password domain controller educators Developers Sale Sale Find a store Gift cards Products Software & services Windows Office Free downloads & security https://support.microsoft.com/en-us/kb/558115 Internet Explorer Microsoft Edge Skype OneNote OneDrive Microsoft Health MSN Bing Microsoft Groove Microsoft Movies & TV Devices & Xbox All Microsoft devices Microsoft Surface All Windows PCs & tablets PC accessories Xbox & games Microsoft Band Microsoft https://support.microsoft.com/en-us/kb/2706695 Lumia All Windows phones Microsoft HoloLens For business Cloud Platform Microsoft Azure Microsoft Dynamics Windows for business Office for business Skype for business Surface for business Enterprise solutions Small business solutions Find a solutions provider Volume Licensing For developers & IT pros Develop Windows apps Microsoft Azure MSDN TechNet Visual Studio For students & educators Office for students OneNote in classroom Shop PCs & tablets perfect for students Microsoft in Education Support Sign in Cart Cart Javascript is disabled Please enable javascript and refresh the page Cookies are disabled Please enable cookies and refresh the page CV: {{ getCv() }} English (United States) Terms of use Privacy & cookies Trademarks © 2016 Microsoft
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about http://serverfault.com/questions/646840/kerberos-event-4-servername-showing-username hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's https://jespermchristensen.wordpress.com/2008/06/12/troubleshooting-the-kerberos-error-krb_ap_err_modified/ how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Kerberos Event 4 servername showing username up vote 0 down vote favorite We have a .Net Windows Service error from that uses a Httplistener and authenticates requests using Kerberos. When users are connecting via their browser, an error in the users event log shows a Kerberos Event ID 4: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server $username$. The target name used was HTTP/$servername$.$domain$.com.au. 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 error from 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 ($domain$.COM.AU) is different from the client domain ($domain$.COM.AU), check if there are identically named server accounts in these two domains, or use the fully-qualified name to identify the server. For some reason the server that it is reporting is the user that is running the service. The first line: The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server $username$. Every website (including Server Fault) has fixes for this error to do with SPN problems, but it always has a servername in the error. I cannot find the above message with a username. We have tried different users and it changes the above part of the error message. All domain accounts have the same problem. If we run the service as the local system account we do not have this problem, but that causes us other problems with the service (it needs domain account for other permissions). We don't have, have never had, any servers with the same na
Write the text yourself, as a copy-paste can give problems (I suspect the Unicode-formatting to be different on some webpages). Update: After this blog-entry I had an article published that gives an overview of Kerberos in a Sharepoint environment Update 23/12-2008: On Windows Server 2008 the IIS7 uses Kernel mode authentication and the kerberos tickets uses this and not the App. Pool identity. This causes KRB_AP_ERR_MODIFIED errors and the Kernel mode authentication must be switched off (check out this blog by Spence Harbar: http://www.harbar.net/archive/2008/05/18/Using-Kerberos-with-SharePoint-on-Windows-Server-2008.aspx) This article is about troubleshooting the specific error message and is mainly written for the Microsoft Sharepoint configuration. It can give some insight for other scenarios as well. I ran into this error message in multiple Windows Sharepoint Services 3.0 (WSS) and Microsoft Office Sharepoint Server 2007 (MOSS) installations with different solutions to it and you can use hours and days to troubleshoot this error message. Therefore I wrote this article to summarize the problem and possible solutions to the error. 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 are popping up on our screen. 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. If you just try to configure it and do not really know how it is supposed to be configured and why then you can get into trouble finding and undoing the bad configuration. 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. Configure delegation trust for the Application Pool account, Frontend- and SQL servers Configure http Service Principal Names (SPN) for the Frontend server NETBIOS-name and FQDN and bind it only to the Application Pool account Configure the clients Internet Explorer security zone for the site to "Intranet" and permit auto-logon for this zone You can check my blog-entry Notes on configuring Sharepoint to use Kerberos for more information. The problem with event id 4: KRB_AP_ERR_MODIFIED The error appears in the Windows system-eventlog on the client that tries to authenticate with the Sharepoint-server with an eventid 4: Source: KerberosEvent Type: ErrorEvent ID: 4