Kerberos authentication troubleshooting guidance - Windows …
https://learn.microsoft.com/en-us/troubleshoot/windows-server/windows-security/kerberos-authentication-troubleshooting-guidance
WebTo determine whether a problem is occurring with Kerberos authentication, check the System event log for errors from any services (such as Kerberos, kdc, LsaSrv, or Netlogon) on the client, target server, or domain controller that provide authentication. If any such errors exist, there might be errors associated with the Kerberos protocol as well.
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