Pre-authentication failures explained?

Discussion in 'Active Directory' started by Brian MXP, Feb 18, 2010.

  1. Brian MXP

    Brian MXP Guest


    In some of our DCs, we see an inordinate amount of Event ID 675s in the Security Log; they
    appear to be originating primarily from Macintosh clients that are bound to AD. Is there
    anything that can be done (server-side or client-side) to eliminate these specific errors?

    Pre-authentication failed:
    User Name: machine$
    User ID: DOMAIN\machine$
    Service Name: krbtgt/DOMAIN.COM.EDU
    Pre-Authentication Type: 0x0
    Failure Code: 0x19
    Client Address: (IP address)

    Brian MXP, Feb 18, 2010
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  2. Meinolf Weber [MVP-DS], Feb 18, 2010
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