What is error code 0x12?
What is error code 0x12?
Failure code 0x12 very specifically means “Clients credentials have been revoked”, which means that this error has happened once the account has been disabled, expired, or locked out.
What is ticket encryption type 0x12?
Ticket Encryption Type: 0x12. Failure Code: 0x0. Transited Services: – This event is generated every time access is requested to a resource such as a computer or a Windows service. The service name indicates the resource to which access was requested.
What is a Kerberos error?
Kerberos Error Codes is a Result Code from Kerberos that implies something went wrong. Kerberos related Result Code messages can appear on the authentication server KDC, the application server, at the user interface, or in network traces of Kerberos packets.
What is Kerberos service ticket?
In the Kerberos world, service tickets (STs) provide access to application services such as, for example, an HTTP or SSH service running on some server.
What is Kerberos pre-authentication failure?
Event Description: This problem can occur when a domain controller doesn’t have a certificate installed for smart card authentication (for example, with a “Domain Controller” or “Domain Controller Authentication” template), the user’s password has expired, or the wrong password was provided.
What is Kerberos pre-authentication?
Kerberos Pre-Authentication is a security feature which offers protection against password-guessing attacks. The AS request identifies the client to the KDC in Plaintext. If Kerberos Pre-Authentication is enabled, a Timestamp will be encrypted using the user’s password hash as an encryption key.
What causes Kerberos pre Authentication failed?
This problem can occur when a domain controller doesn’t have a certificate installed for smart card authentication (for example, with a “Domain Controller” or “Domain Controller Authentication” template), the user’s password has expired, or the wrong password was provided.
How do you resolve Kerberos problems?
Resolution. To resolve this problem, update the registry on each computer that participates in the Kerberos authentication process, including the client computers. We recommend that you update all of your Windows-based systems, especially if your users have to log on across multiple domains or forests.
How do I verify a Kerberos token?
How do you authenticate with Kerberos?
- Client requests an authentication ticket (TGT) from the Key Distribution Center (KDC)
- The KDC verifies the credentials and sends back an encrypted TGT and session key.
- The TGT is encrypted using the Ticket Granting Service (TGS) secret key.
What is Kerberos service name?
A service principal name (SPN) is a unique identifier of a service instance. SPNs are used by Kerberos authentication to associate a service instance with a service logon account. This allows a client application to request that the service authenticate an account even if the client does not have the account name.
What does the error code 0x12 mean in Kerberos?
According to my research, the code 0X12 means client’s credentials have been revoked. This might be because of an explicit disabling or because of other restrictions in place on the account. For example: account disabled, expired, or locked out. 4768 (S, F): A Kerberos authentication ticket (TGT) was requested.
What is a Kerberos service ticket?
A Kerberos service ticket was requested. This event is generated every time access is requested to a resource such as a computer or a Windows service. The service name indicates the resource to which access was requested. This event can be correlated with Windows logon events by comparing the Logon GUID fields in each event.
What are the Kerberos error codes in Windows Event log entries?
Windows event log entries often contain Kerberos failure codes (for an example, please see security event 676 ). These failure codes are the original error codes from the Kerberos RFC 1510 (see page 83 for the complete list). For your convenience, we have extracted the error codes below and added some of our comments.
What is keykerberos pre-authentication event?
Kerberos Pre-Authentication types This event generates every time Key Distribution Center issues a Kerberos Ticket Granting Ticket (TGT). This event generates only on domain controllers. If TGT issue fails then you will see Failure event with Result Code field not equal to “ 0x0 ”. This event doesn’t generate for Result Codes: 0x10, 0x17 and 0x18.
