Pre-authentication failed

Discussion in 'Windows Vista Networking' started by James, Jul 19, 2007.

  1. James

    James Guest

    We just added an Windows Vista Ultimate compute to our Windows 2003
    domain. Now our PDC will log these failure audits every so often for
    the Vista machine. Anyone have any ideas?

    Pre-authentication failed:
    User Name: COMPUTERNAME$
    Service Name: krbtgt/DOMAINNAME.LOCAL
    Pre-Authentication Type: 0x0
    Failure Code: 0x19
    Client Address:
    James, Jul 19, 2007
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  2. James

    ned Guest

    Hi James,

    I have this problem too, just the Vista computer. Switching on this
    computer generates 4 loggings on the PDC. The only thing I have found
    out is:

    "Check the User ID field. Most events generated by computer accounts
    are safe to ignore. Determine the reason for the authentication failure
    by checking Failure Code. TGT failures are usually due to a bad password
    or time synchronization between workstation and domain controller. If
    Failure Code indicates a bad password, how many failures exist for the
    same account? Look at the client IP address. Is an innocent user error
    or malicious attack indicated. If practical contact user regarding their
    recent logon attempts."

    In other words, in our case it's safe to ignore these failure messages.
    What I don't quite understand is that there is no real solution or
    workaround, if a message is safe to ignore why log it in the first

    Anyhow, I'll keep looking and post it when I find out how to solve this
    ned, Nov 6, 2007
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