Getting error 4625 on the server from two new workstations.

Question

I am getting error 4625 on the Windows server 2016 essentials. after some troubleshooting, i realized that the error is caused by addition of two new HP workstations to the domain. I am not sure how to stop the login failure other than turning off the computers. I appreciate your help.

Jamshid.

Here is the error message.

An account failed to log on.

Subject:

Security ID:		SYSTEM

Account Name:		NLFSRV$

Account Domain:		NLF

Logon ID:		0x3E7

Logon Type: 3

Account For Which Logon Failed:

Security ID:		NULL SID

Account Name:		

Account Domain:		

Failure Information:

Failure Reason:		Unknown user name or bad password.

Status:			0xC000006D

Sub Status:		0xC0000064

Process Information:

Caller Process ID:	0x378

Caller Process Name:	C:\Windows\System32\lsass.exe

Network Information:

Workstation Name:	NLFSRV

Source Network Address:	-

Source Port:		-

Detailed Authentication Information:

Logon Process:		Schannel

Authentication Package:	Kerberos

Transited Services:	-

Package Name (NTLM only):	-

Key Length:		0

This event is generated when a logon request fails. It is generated on the computer where access was attempted.

The Subject fields indicate the account on the local system which requested the logon. This is most commonly a service such as the Server service, or a local process such as Winlogon.exe or Services.exe.

The Logon Type field indicates the kind of logon that was requested. The most common types are 2 (interactive) and 3 (network).

The Process Information fields indicate which account and process on the system requested the logon.

The Network Information fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.

The authentication information fields provide detailed information about this specific logon request.

- Transited services indicate which intermediate services have participated in this logon request.

- Package name indicates which sub-protocol was used among the NTLM protocols.

- Key length indicates the length of the generated session key. This will be 0 if no session key was requested.

Answer 1

Hello,

Thank you for posting in Q&A forum.

When the username is unknown or the password is wrong to log in to Windows server, it will show the failed logon attempt message and Windows Security log event 4625 with status code 0xC000006D and substatus 0xC0000064. For details, I suggest you refer to the following link:

https://shellgeek.com/event-id-4625-0xc000006a-account-failed-to-log-on/

I hope the information above is helpful.

Best regards

Zunhui

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