The following is an overview of the events generated on domain controllers in the Windows Event Viewer that are relevant to the public key infrastructure.
Event Sources
The events of the domain controllers are written to the system log. The following sources contain PKI-relevant Active Directory events:
- Microsoft Windows Kerberos Key Distribution Center
Microsoft-Windows-Kerberos-Key-Distribution-Center event source
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ID | Type | Event text |
---|---|---|
19 | Warning | This event indicates an attempt was made to use smartcard logon, but the KDC is unable to use the PKINIT protocol because it is missing a suitable certificate. |
20 | Warning | The currently selected KDC certificate was once valid, but now is invalid and no suitable replacement was found. Smartcard logon may not function correctly if this problem is not remedied. Have the system administrator check on the state of the domain's public key infrastructure. The chain status is in the error data. |
21 | Warning | The client certificate for the user %1\%2 is not valid, and resulted in a failed smartcard logon. Please contact the user for more information about the certificate they're attempting to use for smartcard logon. The chain status was : %3 |
29 | Warning | The Key Distribution Center (KDC) cannot find a suitable certificate to use for smart card logons, or the KDC certificate could not be verified. Smart card logon may not function correctly if this problem is not resolved. To correct this problem, either verify the existing KDC certificate using certutil.exe or enroll for a new KDC certificate. |
32 | Warning | The Key Distribution Center (KDC) uses a certificate without KDC Extended Key Usage (EKU) which can result in authentication failures for device certificate logon and smart card logon from non-domain-joined devices. Enrollment of a KDC certificate with KDC EKU (Kerberos Authentication template) is required to remove this warning. |
39 | Warning or error | The Key Distribution Center (KDC) encountered a user certificate that was valid but could not be mapped to a user in a secure way (such as via explicit mapping, key trust mapping, or a SID). Such certificates should either be replaced or mapped directly to the user via explicit mapping. See https://go.microsoft.com/fwlink/?linkid=2189925 to learn more. User: %1 Certificate Subject: %2 Certificate Issuer: %3 Certificate Serial Number: %4 Certificate Thumbprint: %5 |
40 | Warning or error | The Key Distribution Center (KDC) encountered a user certificate that was valid but could not be mapped to a user in a secure way (such as via explicit mapping, key trust mapping, or a SID). The certificate also predated the user it mapped to, so it was rejected. See https://go.microsoft.com/fwlink/?linkid=2189925 to learn more. User: %1 Certificate Subject: %2 Certificate Issuer: %3 Certificate Serial Number: %4 Certificate Thumbprint: %5 Certificate Issuance Time: %6 Account Creation Time: %7 |
41 | Warning or error | The Key Distribution Center (KDC) encountered a user certificate that was valid but contained a different SID than the user to which it mapped. As a result, the request involving the certificate failed. See https://go.microsoft.com/fwlink/?linkid=2189925 to learn more. User: %1 User SID: %2 Certificate Subject: %3 Certificate Issuer: %4 Certificate Serial Number: %5 Certificate Thumbprint: %6 Certificate SID: %7 |
120 | Error | The Key Distribution Center (KDC) failed to validate its current KDC certificate. This KDC might not be enabled for smart card or certificate authentication. Kdc Certificate Information: Issuer Name: %1 Serial Number: %2 Thumbprint: %3 Template: %4 Kerberos Error: %5 Validation Error: %6 |
200 | Warning | The Key Distribution Center (KDC) cannot find a suitable certificate to use. This KDC is not enabled for smart card or certificate authentication. |
302 | Information | The Key Distribution Center (KDC) uses the below KDC certificate for smart card or certificate authentication. Kdc Certificate Information: Issuer Name: %1 Serial Number: %2 Thumbprint: %3 Template: %4 |
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