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The computer attempted to validate the credentials for an account. RRS feed

  • Question

  • Hi,

    I have a strange problem.

    We have two separate domains (in two forest, no trust). The DPM server is located in domain A. Some of the protected servers located in domain B.

    We have set up a certificate based auth. between the dpm and the servers in the other domain and it works fine.

    But I have recognized that every time when a backup starts to back up any resource on a server located in domain B, multiple Audit Failure events are created on the DPM server Security Log and parallelly in domain A domain controller security log! Audit failure log on dpm looks like:

    An account failed to log on.

    Subject:
        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:        
        Account Domain:        

    Failure Information:
        Failure Reason:        An Error occured during Logon.
        Status:            0xC000006D
        Sub Status:        0x0

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

    Network Information:
        Workstation Name:    -
        Source Network Address:    -
        Source Port:        -

    Detailed Authentication Information:
        Logon Process:        Schannel
        Authentication Package:    Microsoft Unified Security Protocol Provider
        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.

    Audit Failure log on the DC looks like:

    The computer attempted to validate the credentials for an account.

    Authentication Package:    MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
    Logon Account:    SOME-SERVER-01$
    Source Workstation:    SOME-SERVER-01
    Error Code:    0xC0000064

    I don't really know why it is happening, but it is very annoying because it spams the eventlog and also our log analyzer server.

    Can someone point it out why it is happening and what can I do to resolve this issue?

    Thank you.

    Monday, February 24, 2020 2:44 PM

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