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Visitor 1

Event ID 4625

Hello, I have a question about Error 4625 which starting to show up. I haven't found any solution yet. The error looks like someone trying to logon via account name and domain from another virtual machine in the same network via RDP, cause account name, and account domain is from this other Virtual. The only hint I have is that this is repeating every 16 minutes. It's still going even I am not logged on that virtual. So someone stole account name and trying to logon different virtual in that network or can it be some app running in the background ? Thank you


An account failed to log on.

Security ID: NULL SID
Account Name: -
Account Domain: -
Logon ID: 0x0


Logon Type: 3


Account For Which Logon Failed:
Security ID: NULL SID
Account Name: admin account name
Account Domain: domain name of 2nd Virtual


Failure Information:
Failure Reason: Unknown user name or bad password.
Status: 0xc000006d
Sub Status: 0xc000006a


Process Information:
Caller Process ID: 0x0
Caller Process Name: -


Network Information:
Workstation Name: mstsc.exe
Source Network Address: -
Source Port: -


Detailed Authentication Information:
Logon Process: NtLmSsp
Authentication Package: NTLM
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.

Level 4 Contributor

Hello, november, I can help you. Event ID 4625 is usually logged in case of any logon failure. It is generated on the machine where the logon effort was made. If it was made on a workstation, it is logged on it. For recommendations on what to do and event XML, a see the Microsoft website.


As well it is better to contact the Microsoft's Support team. After you solve your issue, learn more about office 365 account backup. As your information is your time and money.

Level 6 Contributor

Visitor 1

Well thank you, i searched this already, but we fixed it other way, via RDPguard

Visitor 1

Hello There, I have the same issue, the account name was from a person that use to work for us, the IP where the attempted logon comes from is from the internal network, the user is disabled but still appears in the security Logs every 15 minutes. I logged onto the server to check if any service was running by that user but nothing came up. I don't think this is a brutal attach to be honest. Any help would be much appreciated. Thanks in advance.