What's causing error 4625

Alwin Soria 1 Reputation point

An account failed to log on.


Security ID:        S-1-5-18  

Account Name:       DeviceName  

Account Domain:     WORKGROUP  

Logon ID:       0x3E7  

Logon Type: 3

Account For Which Logon Failed:

Security ID:        S-1-0-0  

Account Name:  

Account Domain:  

Failure Information:

Failure Reason:     An Error occured during Logon.  

Status:         0x8009030E  

Sub Status:     0x0  

Process Information:

Caller Process ID:  0x8ebc  

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

Network Information:

Workstation Name:   DeviceName  

Source Network Address: -  

Source Port:        -  

Detailed Authentication Information:

Logon Process:      Authz  

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.
Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
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Windows 10 Network
Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
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  1. Dillon Silzer 39,506 Reputation points

    Hi @Alwin Soria

    Please take a look at MaxDaniels's answer at:


    It looks like there could be devices in your WORKGROUP trying to communicate (such as file shares/printers) that perhaps don't have network credentials (or proper ones). The alerts are most likely benign but you can investigate your other devices configurations.


    If this is helpful please accept answer.

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