Setspn delete all. 1" to specify the DC within the lab).

Setspn delete all New comments cannot be posted and votes cannot be cast. All versions of NTLM, including LANMAN, NTLMv1, and NTLMv2, are no longer under active feature development and are deprecated. In this regard, do I need to delete the CIFS Server object in AD and recreate i Oct 20, 2009 · 3 I found several references (see below) on blogs that the setspn. To delete an SPN from an account, use the setspn command with the -d switch rather than the -a switch. So if I wanted to see all services registered to my computer's account (BrianPC in the Contoso. Run the SETSPN -Q spnName command to learn which service account the SPN is registered on. Aug 4, 2025 · Depending on whether the service is running under the NetworkService account or a domain account, you must use different setspn options to delete the SPNs for the machine or the domain account. local domain\svcaccount " Command: setspn -d <service name> <service account> Where to run: domain-joined machine This will set the SPN for the provided service name and service account (if it already exists). Sep 20, 2018 · Verify Service Principal Names The most important reason to do all of this work is to have all of the Kerberos magic done for you. I tried tried deleting them, but was not successfull. PS C:\Windows\system32> setspn -Q http/chi-prodspsql. Source: Service Principal Names (SPN): SetSPN Syntax When using command line, it confirms that the deletions and the registrations are successful, but SETSPN -L returns the old information still. IIS 7. Anyone has an idea to fix? Thanks! Archived post. com domain\serviceaccount SetSPN -D MssqlSvc\ComputerA domain\serviceaccount SetSPN -D MssqlSvc\ComputerA. devopsage. The only way to prevent duplicate SPN when you generate new one is to use setspn -s AD is large enough and roughly speaking, one object in AD can be Nov 24, 2011 · [Total: 0 Average: 0] delete SPN, domain controller, invalid SPN, Kerberos authentication, registered SPNs, setspn command-line tool, SPN, SQL Server, SSPI context error, troubleshooting Dec 7, 2019 · Usage: C:\Windows\system32\setspn. , specific to our AD)?" Or maybe "How do I get a list of all SPN names specific to our AD?" Here's a crude way of getting a list of unique SPN classes. This utility can add, delete or view SPN registrations. Jul 6, 2023 · The setspn tool is the built-in tool used to read, modify, and delete service principal names in Active Directory. I’m inclined to say remove the sqladmin one but I don’t know what that account does for you. Feb 13, 2009 · The syntax for the -L switch is SETSPN -L *Account*. Hostname / Node in case of cluster Hey gang, I'm purging off a bunch of antiquated SPN's from my AD domain. Some of them are pointing to two different servers and one of them is pointing to account that is disabled and to a server. I tried using setspn -d command and just removing in the ASDI editor and for some reason All it does is write the value to the servicePrincipalName attribute of the specified account and enforces uniqueness checks. One of the reasons for this is different configuration May 20, 2025 · Example: " setspn -s http/sso. This tool also enables you to view the current SPNs, reset the account's default SPNs, and add or delete supplemental SPNs. exe under a logon account with permissions to register the SPN. e. Feb 5, 2014 · Previous versions of the setspn utility – which is used to delegate an SPN to a service principal – didn’t prevent us from shooting ourselves in the foot, allowing us to go right ahead and assign duplicate SPN’s. However, since the SDK (Data Access) service runs on ALL management servers now… the SPN’s for the SDK (DAS) account will be different now. In the past i have used setspn -S to add SPNs after checking that they do not already exist. Internet_Schneider (Internet Schneider) November 15, 2019, 8:53am 5 Oct 13, 2022 · Hi all :) I need some help for finalizing a script that must use ADSI, to remove a SPN from a client computer account, because we're not unfortunately authorized in using AD PS module. One way to manage SPNs is to use the ActiveDirectory PowerShell module. To assign, list or delete the SPN, we use an in-built command line tool “SETSPN. To do so, follow these steps. It covers attacks like Kerberoasting, best practices, detection methods, and advanced use cases in hybrid, cloud, and You can use setspn to view the current SPNs, reset the account's default SPNs, and add or delete supplemental SPNs. com:1433 domain Jan 28, 2025 · Use the setspn command to identify and remove the duplicate SPN record. If you deploy OpsMgr using a standard domain user account for the SDK service, you might see alerts like the following: Data Access Service SPN Not Download and use 1+ Setspn delete stock videos for free. May 19, 2020 · I have several duplicate SPN’s associated with one of my DC’s. 300. This module contains the Get-Ad* and Set-Ad* cmdlets capable of reading and writing SPNs on user and computer objects. It's said that Setspn -S checks if SPN already exists before ad May 15, 2025 · The setspn command line tool allows a user with appropriate permissions to view, edit and delete the Service Principal Names (SPN) property associated with Active Directory objects. 200. Setspn -A or add spn by editing AD attribute can generate a duplicate SPN. View all SPN for a given computer Use the Get-ADComputer cmdlet and specify the ServicePrincipalNames parameter. But not SetSPN. One with hostname and one with FQDN: setspn -S HTTP/dc-01. I like to destroy the 7-mode vfiler and use same name and IP details for the new SVM so that I dont have to change any user share path names. , setspn), and security implications. Note: searching for duplicates, especially forestwide, can take a long period of time and a large amount of memory. exe -a http/spntest. Looking at the content below, how would I remove the SPN so I can re-create? What would the &hellip; Duplicate SPNs will cause Kerberos to fail and fall back to NTLM, run setspn -x periodically to check for this. (It likely predates my tenure at this organization. Does the SETSPN command not remove the old ones either? Jul 6, 2023 · The setspn tool is the built-in tool used to read, modify, and delete service principal names in Active Directory. The other way is to use the setspn –l in a command prompt to view the SPNs for that specific object. -Q will execute on each target domain/forest. SPNs are not required to be unique across forests, but duplicates can cause authentication issues when authenticating cross-forest. SetSPN: This cmdlet allows users to create, remove, and manage SPNs. Get-ADServiceAccount: This cmdlet retrieves information about service accounts in Active Directory, including their associated SPNs. However these changes don't take effect for clients, not even days later. Nov 13, 2019 · Duplicate SPNs - Which one do I delete? Software & Applications windows-server question general-windows brianswales (Fessor) November 13, 2019, 7:31pm Jun 25, 2019 · SetSPN command-line To set, list or delete the SPN, we use an in-built command line tool SETSPN provided by Microsoft. SPNs are used to locate a target principal name for running a service. exe is a command-line tool that enables you to read, modify, and delete the Service Principal Names (SPN) directory property. Nov 10, 2015 · I have duplicate SPNs for MSSQLsvc in AD associate with various domain accounts. exe [modifiers switch] [accountname] Where "accountname" can be the name or domain\name of the target computer or user account Edit Mode Switches: -R = reset HOST ServicePrincipalName Usage: setspn -R accountname -S = add arbitrary SPN after verifying no duplicates exist Usage: setspn -S SPN accountname -D = delete arbitrary SPN Usage: setspn -D SPN A common configuration step when establishing a Kerberos authentication method is the use of a Service Principal Name, or SPN, to identify a specific service. Please help me out. Jan 15, 2019 · Usage: setspn -A SPN computername -D = delete arbitrary SPN Usage: setspn -D SPN computername -L = list registered SPNs Usage: setspn [-L] computername The other problem was that SetSPN was part of the Resource Kit and did not ship with the OS. Feb 28, 2018 · To set, list or delete the SPN, we use an in-built command line tool SETSPN (setspn. Both are running Server 2012. Overview SPNs must be unique, so if an SPN already exists for a service on a server then you must delete the SPN that is is already registered to one account and recreate the SPN registered to the correct account. It Reads, modifies, and deletes the Service Principal Names (SPN) directory property for an Active Directory service account. -X will return duplicates that exist across all targets. exe tickets and try and find your ticket in cmd. in Domain Finding the Duplicate SPN in Windows 2008 is very simple, yes we have an updated SETSPN command which has a –X and -Q switch and this can be used to find the Duplicate service principal name setspn -X May 12, 2025 · Setspn. To configure an SPN for SQL Server, use the SETSPN utility in the Microsoft Windows Resource Kit. Setspn is available if you have the Active Use setspn -X to find and then setspn -D to delete duplicates. com Updated object Conclusion The main point we want to illustrate here is to check for duplicate SPN’s before registering them. The SQL server is a virtual server running on a physical server and I wonder if this has anything to do with the duplicate accounts. This article explains SPN structure, registration, uniqueness requirements, tools (e. using command prompt i tried but it is not working. Use the following procedure toremove one of the duplicate SPNs. You use SPNs to locate a target principal name for running a service. Thank you for reading ! May 7, 2025 · Service Principal Names (SPNs) are unique identifiers in Active Directory used to map service instances to service accounts for Kerberos authentication. Run the SETSPN -D command to remove the SPN from the service. Mar 9, 2022 · Tell me, can it happen that this delegation will allow you to create a duplicate SPN? Yes, it's possible when the admin don't use the command setspn -S to add a SPN . Most likely, the script has been run previously. Jun 14, 2022 · The <spn> element adds a Service Principal Name (SPN) to the collection of SPNs. -D Deletes the specified SPN to the account. e if it was named SSSH-DC1-2 and was changed simply to SSSH-DC2, both entries are there). Get-SPN: Focuses on listing the SPNs associated with a specific account or all accounts. Aug 8, 2013 · The SPNs were unknown, and the user accounts and server names … eh spread all over the place… So I needed a general script to list all SPNs, for all users and all computers… Nice fact to know, SPNs are set as an attribute on the user or computer accounts. Apr 22, 2025 · As we all know, the KDC’s cannot issue tickets for a particular service if there are duplicate SPN’s, and authentication does not work if the SPN is on the wrong account. Discover the importance of SPNs and how to use SETSPN to add, delete, and list SPNs for various accounts in Active Directory. setspn -L administrator displays: http/<fqdn of my domain> I have no idea what this is doing or why it's there. For example, using setspn to find SPNs linked to a certain computer: setspn -L <ServerName> Setup of service principal name is required for other applications to connect with sql server via Kerberos. Running 'setspn -X' again: C:\Users\Administrator>setspn -X Checking domain DC=DOMAIN,DC=GLOBAL Processing entry 0 found 0 group of duplicate SPNs. exe) provided by Microsoft. Thousands of new images every day Completely Free to Use High-quality videos and images from Pexels Sep 10, 2009 · 6. SetSPN is now part of the OS from the moment you install it. Where this command i have to type. find the one that belongs to the listener and tell us what it says. com… Usage: C:\Windows\system32\setspn. It can be used to add Service Principal Names to an AD account, as well as delete them and search for duplicate SPNs that are in the domain. domain and got a list of all SPN's for the server. Removing the Service Principal Name seems to be the solution, but I have been unsuccessful in removing the SPN using the normal means. Note: You must run the setspn command from a command prompt. If you run setspn -l <computer> you can see the list of all SPN records created. May 15, 2025 · The setspn command line tool allows a user with appropriate permissions to view, edit and delete the Service Principal Names (SPN) property associated with Active Directory objects. Aug 21, 2018 · Here you will see a list of all the SPNs and also the ability to add SPNs. exe [modifiers switch] [accountname] Where "accountname" can be the name or domain\name of the target computer or user account Edit Mode Switches: -R = reset HOST ServicePrincipalName Usage: setspn -R accountname -S = add arbitrary SPN after verifying no duplicates exist Usage: setspn -S SPN accountname -D = delete arbitrary SPN Usage: setspn -D SPN Feb 15, 2019 · C:\Secret\Path>setspn. Aug 6, 2009 · SetSPN is a command-line tool that allows you to read, modify, and delete the SPN for an Active Directory Object. com:1433,48888" "NT Service\MSSQLSERVER" I am trying to delete above and register this only under 48888 Download and use Setspn Delete stock photos for free. I ran setspn -x -f and it listed 3 duplicate spns and one of them was the one referenced on event id11 on system log. Then, on your SQL Server, open the services. This can also be verified once the above sets of steps are completed. bridgenet. msc console and check if the service account that is configured to run the Sep 29, 2025 · Check and configure SQL Server to use Windows Authentication with Kerberos instead of NTLM with setspn for SQL Server. I know how to remove them but how can you tell which one to remove. In this case you can either substitute the user samaccountname, or use AD Users and Computers, enable Advanced View, and delete the offending duplicate SPN from the Attribute Editor tab of the user account. - My servers keep shutting down due to authorization issuesinvestigating the ADSI editor and using repadmin I noticed the old SPNs are still there causing issues (i. And what needs to be removed. HTTP/10. Everything OK But after a few minutes, the duplicate SPNs are coming back. Rebooting fixed it. If you're unable to remove it due to the "unable to find" error, you might need to use the setspn -R command to reset the SPN. Spn’s are pretty easy to add and remove in the ad objects attribute tab of ADUC. Hi guys In powershell, Am trying to set spn based on ther servername and accountname At the same time am trying delete inactive spns creating a for loop for that particular servername . I tried using adsiedit and located the name of server that holds the duplicate spn but when i went to properties of the machine and selected edit the remove Apr 5, 2018 · Step 2: The syntax for adding is Syntax for SetSPN. In my googling i have not come across a powershell equivalent command to setspn. Jul 22, 2013 · How can I safely remove the duplicate SPN's for a SQL account? I have verified these duplicates using setspn -X. exe - Insufficient access rights Ask Question Asked 15 years, 11 months ago Modified 9 years, 7 months ago. As I discover more SPNs, they will be added. Mar 30, 2010 · I have tried the SETSPN and am still not able to remove the duplicate SPN. exe” provided by Microsoft. local devopsage\zz_test setspn -S HTTP/dc-01 devopsage\zz_test Aug 9, 2024 · Is your question really "how do I get a list of all AD objects that have a service principal name in a list of SPNs that we've created (i. Jan 14, 2019 · I wasn’t aware renaming a DC would cause issues… I believe the duplicate SPNs are because while in the renaming process clients and services may still try to access the old DC services under the old name. Can somebody please help me with the correct command to delete all the below registered setspn commands. com shows multiple SPNs with different accounts, you must delete all but one, via "setspn -D HTTP/util01. com oldaccount". Sep 2, 2021 · You can run SetSPN from member servers or workstations. Aug 28, 2020 · when you connect through the listener, try doing klist. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. They map a specific service, port, and object together with this convention: class/host:port/name If you use a computer object to auth (such as local service): MSSQLSVC/tor-sql-01. Mar 9, 2020 · Also, If you want to list all the SPN’s registered for a service account, you can use SetSPN -L domainname\serviceaccount If you want to delete a spn, you can use SetSPN -D MssqlSvc\ComputerA. is there any syntax like get-spn to validate if i have added correct entries rather than checking from AD attribute editor of the service account setspn -s HTTPS/server01. We have multiple stacknames created for one server but only one stack per server can be active. 1" to specify the DC within the lab). Jul 24, 2015 · I’m trying to delete a SPN but it doesn’t seem to delete even though the command indicates that it has been. exe utility should be run from either a client or server machine in the domain, but not from the domain controller itself. Even worse, when I check ADSIEdit, the account's SPN attribute contains information that is not reflected via the console output of SETSPN -L. SPNs are essential for locating a target principal name associated with a service. 2. … Aug 28, 2018 · The syntax I used was setspn -d "MSSQLSvc/hostname. They are not. Syntax SETSPN [modifiers switch] [accountname] Key accountname The name or domain\name of the target computer or user account Edit Mode Switches: -R = reset HOST ServicePrincipalName Usage: setspn -R accountname -S = add arbitrary SPN after verifying no duplicates exist Usage: setspn -S SPN Nov 13, 2019 · You’ve got the spn setup there and on supervisor but you’ve only got supervisor running services. ) Is this safe to delete or is it doing Jun 4, 2018 · SetSPN is a native windows binary which can be used to retrieve the mapping between user accounts and services. domain domain\serviceAccount to remove the MSSqlServer SPN. exe is: setspn { -A SPN | -D SPN | -L } service_account Arguments -A Adds the specified SPN to the account. Sep 19, 2017 · I was then able to remove the SPN and setspn -x comes back clean Topic Replies Views Activity Deleted SPN's keep coming back Software & Applications general-windows , active-directory-gpo , question 5 1056 May 21, 2020 Duplicate SPN Software & Applications discussion , general-windows , active-directory-gpo 5 208 April 19, 2010 Using the Get-ADUser command, we will then explore how to Add, Remove and Replace SPNs in the ServicePrincipalNames property. Jan 23, 2019 · The Setspn. Create SPN in Active Directory setspn -d: allows you to remove a given SPN from a given account setspn -a: allows you to register a SPN for a given account: try to avoid this one, use setspn -s (and -f) instead. After migrating the ADFS server (converting a virtual machine from hyperv to vmware), the Active Directory Federation Service stopped… Mar 24, 2025 · The setspn command-line tool is used to read, modify, and delete the Service Principal Name (SPN) directory property for an Active Directory (AD) service account. Integration Combine SetSPN with PowerShell scripts or other CMD commands to automate SPN management. setspn May 19, 2025 · setspn -L localhost - This command will check registrations for the account localhost, which is a name indicative of the local computer. Oct 4, 2017 · How to view/add an SPN with Powershell No need to bother with the syntax of SetSPN anymore (despite it still works). exe is a command line tool that enables you to read, modify, and delete the Service Principal Names (SPN) directory property. Tom Aug 11, 2022 · In one of the MS docs I found Setspn -A HTTP/myServer. I have active stack declared in a variable here and servername declared in another variable Here is the logic I 3 days ago · Verify SPN has been successfully registered Using SETSPN Command Line Utility In Command Line enter the following command: setspn -L <Domain\SQL Service Account Name> and press enter. Setspn. I have read many articles for creating a gMSA, but they all have a generic &quot;SPN1, SPN2&quot; for the examples or something referencing SQL instances for the SPN. -L Lists all SPNs registered to the account. It seems that the records are cached in IIS/SQL or both, because if I make a new DNS test record for the same site, add a brand new SPN, add host header Jan 3, 2024 · I can’t figure out where the same SPNs are. Generally, a domain administrator manages SPNs. This allows you to monitor the impact and address any issues that arise before proceeding with the next set of removals. DOMAIN:1433 This would list if the SPN is in AD (which it is) but also what account is holding the SPN. Jun 4, 2025 · Once you've identified the object, use setspn -D to delete the specific SPN. This may be needed if an SPN was added incorrectly, or is no longer needed. Extended protection enhances the existing Windows authentication functionality in order to mitigate authentication relay or "man in the middle" attacks. So that makes it fairly ease to query for that attribute. Dec 11, 2015 · Hi, for some time now we have been getting event id11 on domain controller system event log which is a 2012 server. Jan 4, 2024 · No. KB-1215: Error: One or more of the following SPNs already associated with other account in the forest Jun 27, 2021 · Once you remove the duplication SPNs as found on SetSPN -x command, It will allow to make updates to SPN on affected account. However, if the account on the SPN is not the RunAs user, then the existing SPN must be deleted so the SPN can be re-created on the correct account. example. Client computer accounts belong to MYDOMAIN1, while the delegated service account for computer object management belongs to MYDOMAIN2. setspn. And how to remove it. This command-line tool allows you to manage the Service Principal Names (SPN) directory property for an Active Directory™ directory service account. For example, you might do this to delete an SPN from one account before assigning it to another account. It no longer depends upon the application pool Identity for this purpose by default and in turn improves the Jan 31, 2022 · NetTools SPN search doesn't not return the duplicates at all, I guess that search is similar to the setspn without the -F parameter. Feb 5, 2024 · Listed SPNs with setspn, shows only one, so I go to register them and then tells me duplicates were found, so I then try to delete, restart SQL services and still get the same error/issue (see setspn -x finds duplicates. According to the Setspn Overview, it's discouraged to use Setspn -A to add an SPN record and it's suggested to use Setspn -S instead. Remove Computer Alias The ability to remove the alias is just as Jun 25, 2024 · Additional configuration for Blue Prism application servers in load balanced environments It is essential that all instances of the Blue Prism Server Service in the same load balancer pool are running under the same service account and the SPN is registered to this account. Examples If an instance of SQL Server is running as a domain user (MyDomain\MySQLAccount) on a computer that is named Jul 6, 2023 · The setspn tool is the built-in tool used to read, modify, and delete service principal names in Active Directory. Permission Errors: If you encounter permission issues, ensure that you have administrative rights or the necessary delegated permissions. Nov 16, 2011 · Learn how to manage Service Principal Names (SPNs) with SETSPN. exe [modifiers switch] [accountname] Where "accountname" can be the name or domain\name of the target computer or user account Edit Mode Switches: -R = reset HOST ServicePrincipalName Usage: setspn -R accountname -S = add arbitrary SPN after verifying no duplicates exist Usage: setspn -S SPN accountname -D = delete The setspn command line utility reads, modifies, and deletes the Service Principal Names (SPN) directory property for an Active Directory (AD) service account. What are you powershell masters using for setting SPNs purely in powershell. Aug 15, 2019 · Hi, We have found couple of duplicated SPN records. Feb 21, 2014 · All the AD/network calls in the rest of my code can specify which server to talk to (powershell ad calls mostly allow for the "-Server 192. This often occurs if the SquaredUp DS application pool account or Data Access Jul 6, 2012 · Gurus I have registed the below setspn commands. There is now a native function built into the Get-ADComputer and Set-ADComputer cmdlets. local myDomain\ServiceUser (this gave me an duplicate SPN Error in first, so I deleted SPN from Step 2) Dec 4, 2008 · SETSPN -L should list all registered SPN's (not just for sql server) use setspn to generate a new spn in the format SETSPN -A MSSQLSvc/host:port accountname Dec 16, 2023 · To avoid a kerberoasting issue, a client made a request to identify the users and take the necessary actions. Add the SPN to the correct account at the command prompt by running the command setspn -S <SPN> <computername of computer which had the System event 4>. Remove an SPN To remove an SPN: 1. They are on user objects. myDomain. You can have this information using this command line: setspn -Q MSSQLSvc/pdc-sqlce-01vm. Be extremely careful with this command, as deleting the wrong SPN can cause service disruptions. May 13, 2022 · I have 3 user/service accounts with SPN's that I can't remove under user and computers/attribute editor, they are greyed out, I have full domain admin access also. it has given command like SETSPN -D <SPN> <SERVERNAME>. 99 HTTP/COMPANY5000. This mitigation is accomplished by Sep 6, 2018 · Stay informed on how to secure access for employees, customers, and non-human identities, from anywhere, to multicloud and on-premises resources, with comprehensive identity and network access solutions powered by AI. com domain\apppooluser Registering ServicePrincipalNames for CN=Application Pool,CN=Users,DC=domain,DC=com http/spntest. 168. May 29, 2024 · To create or re-create the SPN by using the SETSPN command, follow these steps: Run the SETSPN -L domain\svcacct command to list SPNs on the SQL Server service account. exe) This page is a comprehensive reference (as comprehensive as possible) for Active Directory Service Principal Names (SPNs). Jun 30, 2024 · Instead of removing all duplicate SPNs at once, consider a staged approach, removing one set of duplicates at a time. Setspn -D won't let me delete it, since it's also claiming the account doesn't exist and -F option can't be combined with -D. It provides many options that allow admins to view, reset, add, or delete SPNs in AD DS. Which is why those SPNs exist. 0. SetSpn allows you to view the current SPNs, reset the "host" SPNs, and add or delete supplemental SPNs. 2. Sep 8, 2020 · Hi all i have created spn entries using the below syntax. Mar 28, 2023 · Hi Gurus, We are migrating vfilers from 7-mode (CIFS only access) to CDOT. Quite some scripts assume you’re looking for a specific SPN (HTTP/…), a specific user, or a specific computer. Aug 8, 2011 · SPN’s (Service Principal Names) settings are very similar in OpsMgr 2012 as they were in OpsMgr 2007. I use setspn -D to remove the old one, then setspn -S to add the new record (-S checks for duplicates). Set-ADUser -Identity accountname… Aug 3, 2015 · At times, we may require to remove a wrongly created SPN entry. Found some on the domain admin account that obviously shouldn't be there and deleted them, but one is giving me pause. I need to delete them for some reason. COM Regards zerokewl (BOB member since 2010-07-03) Jul 24, 2015 · I’m trying to delete a SPN but it doesn’t seem to delete even though the command indicates that it has been. Additionally, enabling View > Advanced features in Active Directory Users and Computers adds another way to configure Kerberos delegation from the Delegation tab of a user or a computer Apr 16, 2012 · I ran setspn -l server. Create SPN with setspn. To download the SETSPN utility, visit the following Mic. Jun 25, 2019 · SetSPN command-line To set, list or delete the SPN, we use an in-built command line tool SETSPN provided by Microsoft. The… Jul 30, 2021 · Open a command prompt and identify where the SPN for SQL is currently registered. exe -D "SPN entry, which needs to be removed" "Service Account or Server Name" Over the weekend, I was working on my lab to simulate an issue, while I observed that the SPN registration was… Dec 7, 2019 · Query or reset the computer's SPN attributeUsage: C:\Windows\system32\setspn. I would like to have a pure powershell command so that i can put the setspn in a try catch block. com domain), I would issue: Aug 26, 2025 · To register the SPN manually, you can use the setspn tool that is built into Windows. You can bypass the duplicate SPN detection by using the "-A" option however. The problem is this. lan Checking domain DC=bridgenet,DC=lan CN=Devi… Figure out which SPNs are the actual dupes and then use setspn to remove them from that computer object: setspn -D http/computer Workstation Some links on the topic: Apr 17, 2015 · Above command will return all the object which contain servername on ServicePrincipalName attribute on domain. If everything looks good via kinit and klist, but apache authentication via mod_auth_kerb fails, this can be a cause. Perform the following steps: Delete the SPN. We can also add other SPNs to this object, depending on what the object is hosting, which type of service and so forth. Experienced administrators learn to use the SETSPN utility to validate SPNs when authentication problems occur. Jan 14, 2017 · Read, modify, or delete the Service Principal Names (SPN) for an Active Directory service account. This article shows you how to specify a user or computer account to be identified with that specific service by using the SetSPN utility. exe has had duplicate SPN detection built-in to it since the Windows Server 2008 release when using the "-S" option. Thousands of new 4k videos every day Completely Free to Use High-quality HD videos and clips from Pexels Active Directory Service Principal Names (SPNs) Descriptions Excellent article describing how Service Principal Names (SPNs) are used by Kerberos and Active Directory: Service Principal Names (SPNs) SetSPN Syntax (Setspn. Finally, we will go over how to clear all SPN values for an account. domainname. contoso. Each SPN specifies a unique endpoint for client activity using the extended protection features for Windows authentication. e. It doesn't do anything special like -mapuser. exe command or manually by using the attribute editor in Active Directory Users and Computers. Instance name \\Service name, this can be anything you want but preferred to use "Service_instance" so while checking we can easily recognize what it belong to. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Aug 29, 2013 · “ SetSPN -x” to find duplicates in the current domain or “ SetSPN -x -f” to find duplicates in the entire forest. Mar 24, 2025 · The setspn command-line tool is used to read, modify, and delete the Service Principal Name (SPN) directory property for an Active Directory (AD) service account. Setspn -F -Q host/servernam will help you to identify on with object the SPN has been added in the forest. List all the spns Jan 3, 2025 · Remove the incorrectly registered SPN by going to the command prompt and running the command setspn -D <SPN> <computername>. Jul 11, 2025 · Normally, when you work with Kerberos delegation, you set the service principal name (SPN) either with a setspn. This has changed in Windows 2008. Feb 9, 2011 · This is a pretty handy thing to know: SPNs are used when a specific service/daemon uses Kerberos to authenticate against AD. Waiting for reply. domain. For example, using setspn to find SPNs linked to a certain computer: setspn -L <ServerName> Jul 6, 2023 · The setspn tool is the built-in tool used to read, modify, and delete service principal names in Active Directory. Next, you need to look for registered ServicePrincipalName to ensure that a valid SPN has been created for the SQL Server. exe tool enables you to read, modify and delete the SPN directory property for an Active Directory service account. Before you run SETSPN, consider the following information: You must run setspn. exe The syntax for SetSPN. lan Checking domain DC=bridgenet,DC=lan CN=Devi… Feb 4, 2019 · Many people consider configuring Kerberos authentication and making it work as a daunting task. Sep 28, 2021 · I need to know how EXACTLY to set a SPN for a new gMSA that I am about to create. How do I tell which ones I can delete? Thanks. Feb 7, 2025 · You can do this by running the following command: setspn -Q <SPN>, where <SPN> has the following structure: HTTP/<fully qualified domain name (FQDN) of the cluster node>@<realm name of the Active Directory domain in upper case>. I've tried in AD, ADSIedit and using powershell. In my original post you can see where it says object updated but when I run setspn -x it still shows up. Oct 31, 2012 · Yes, that's part of the change process. To setup SPN First collect all the details mention below to use with SETSPN command 1. Use this tool as below: To set/add the SPN, generally we run two commands. How can I permanently delete them? Where do they come from? In case it’s relevant, I re-named one of my DC’s–was named “Blue”, now named “Green”, to make way for a new server named If setspn -Q HTTP/util01. Aug 16, 2019 · I’m having issues on my exacqvision server displaying client-side kerberos not authenticating errors. Oct 22, 2012 · Michael Simmons shows you how to how to specify a user or computer account to be identified with an SPN by using the SetSPN utility. I need to remove the SPN. Oct 18, 2005 · how to remove SPN. SPNs are usually associated with computers. It is important to understand that the SetSPN tool does actions against a specific account and cannot query for a SPN throughout your domain or forest unless you are using the Windows Server 2008 version of the tool. Check what account the duplicate SPN is registered under. You can use setspn to view the current SPNs, reset the account's default SPNs, and add or delete supplemental SPNs. Learn how to list all SPNs in the Windows domain using Powershell in 5 minutes or less. setspn -d "spn" hostname would work if your spns are on computer objects. Mar 24, 2025 · The setspn command line utility reads, modifies, and deletes the Service Principal Names (SPN) directory property for an Active Directory (AD) service account. g. BOXI. If the account on the SPN is the Tableau Server RunAs user, this warning can be ignored. The syntax for removing a SPN entry is: setspn. the command setspn -X -F will help you to identify duplicate SPN. Mar 17, 2022 · if you need to delete duplicate SPN , you should removing SPN on the wrong computer or service account to restore the service. 0 has a new Kernel-mode authentication feature using which the ticket for the requested service is decrypted using Machine account (Local system) of the IIS server. Feb 15, 2019 · This post is more about the confusion that may arise around SPNs for setting up Kerberos authentication in IIS 7. I have deleted each of them multiple times, using both setspn -D and ADSIedit, but after a few minutes these SPN’s all re-appear. Setspn is a command-line tool that is built into Windows Server 2008. local:1433 If you use a user object to auth (such as a service account, or admin Feb 16, 2021 · Troubleshooting SPN Troubles - Cannot generate SSPI context Working through some issues with duplicate SPNs - using dbatools and setspn We would like to show you a description here but the site won’t allow us. Presumably the The Kerberos script may fail with the message Found duplicate SPNs (see Troubleshooting Kerberos). If the SPN values are referencing decommissioned servers and/or services, is it safe to remove them? If I ever come across SPN values again, do you have any recommendations on how to approach it? Sep 25, 2017 · Run the following setspn commands from a Command line prompt on a Domain Controller or any machine with the AD tools installed: Run the following command to remove the SPN from the computer object: Jul 5, 2019 · Service principal names (SPNs) are attached to user and computer Active Directory (AD) objects; you can add, remove, or modify them at will. I then ran setspn -d MSSQLSvc/server. COM HTTP/COMPANY5000 BOCENTRAL/INSTAL05. How do you determine which record is a wrong one? Tnx. rkugsxy aebcl ldp tgepwvst ylwcgy fdqitzb tgcauhv mkqvwea ofs oeemy ceohdw tsyuc ofy yvl dugnup