troubleshooting Question

Large amount of security audit failures with no "Source Workstation".

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FormerZeroCool asked on
Active DirectorySecurity* domain controller
5 Comments1 Solution156 ViewsLast Modified:
We are seeing a large amount of security audit failures with no source workstation listed.  Usually these happen in quick blips with well over 1,000 accounts tried in a short time span.  In each instance, there is never a source workstation listed and 99% of the errors show a 0xc0000064 error since there is no such account.  Is there anywhere else to check where I can tell where this took place from?  We have multiple DC's, but only one DC is showing the audit failures.

Authentication Package:      MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
Logon Account:      ****
Source Workstation:      
Error Code:      0xc0000064

Thanks!
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FormerZeroCool

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