Operating SystemsWindows 2008 R2 and 7
Windows 2012 R2 and 8.1
Windows 2016 and 10
• SubcategoryAccount Logon
• Credential Validation
in Windows 2003
and before 679
I have not actually seen this event logged by Windows but suspect that it if it is logged at all it would be in conjunction with IIS’s certificate mapping capability where users are authenticated via a client certificate which is then mapped to a Windows user account according to mapping rules defined in IIS.
I haven’t been able to produce this event. Have you? If so, please start a discussion (see above) and post a sample along with any comments you may have! Don’t forget to sanitize any private information
An account could not be mapped for logon.
See Also: A process was assigned a primary token
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