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Failure code 0x12 very specifically means “Clients credentials have been revoked”, which means that this error has happened once the account has been disabled, expired, or locked out.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 Windows pre-authentication?

Kerberos Pre-Authentication is a security feature which offers protection against password-guessing attacks. If the KDC reads a valid time when using the user’s password hash, which is available in the Microsoft Active Directory, to decrypt the Timestamp, the KDC knows that request isn’t a replay of a previous request.

What is the event ID for Kerberos authentication?

Note: Event ID 4768 is logged for authentication attempts using the Kerberos authentication protocol. Refer to event ID 4776 for authentication attempts using NTLM authentication.

What is a pre-authentication?

Pre-authentication rules determine the conditions that must be satisfied before a user is allowed to authenticate. Just because a user is able to provide a valid one-time passcode does not necessarily mean that they should be granted access to the network.

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.

Why does Kerberos fail authentication?

How do I fix Kerberos pre authentication failed?

How long does a pre-authorization last?

about five days
A pre-authorization is essentially a temporary hold placed by a merchant on a customer’s credit card, and reserves funds for a future payment transaction. This hold typically lasts about five days, though this depends on your MCC (merchant classification code).

What is Windows Event ID 4771 for Kerberos?

Kerberos authentication. Windows records event ID 4771 (F) if the ticket request (Step 1 of Figure 1) failed; this event is only recorded on DCs. If the problem arose during pre-authentication (either steps 2, 3, or 4 of Figure 1), Windows records event 4768 instead. Failed Kerberos pre-authentication event properties.

Are there any Kerberos pre-authentication failed events?

Looking into Event Viewer on the domain controller itself, I find very few Event 4771 (Kerberos pre-authentication failed) but every time I filter our event 4771, there is an event for almost the exact moment that I am searching.

Where does password verification take place in Kerberos?

In Windows Kerberos, password verification takes place during pre-authentication. The User field for this event (and all other events in the Audit account logon event category) doesn’t help you determine who the user was; the field always reads N/A.

What are the result codes of Kerberos failure?

Result codes: Result code Kerberos RFC description Notes on common failure codes 0x11 KDC has no support for transited type 0x12 Clients credentials have been revoked Account disabled, expired, locked out, l 0x13 Credentials for server have been revoked 0x14 TGT has been revoked