Windows Security Log Event ID 5168

5168: Spn check for SMB/SMB2 fails.

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Spn check for SMB/SMB2 fails.

This event is related to Extended Protection for Authentication in the Server service. SMB hardening. KB article

This event is new to Windows 2008 Release 2 and Windows 7. It does not appear in earlier versions of Windows.

We have not been able to produce this event.

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Description Fields in 5168

Subject:
 Security ID:  %1
 Account Name:  %2
 Account Domain:  %3
 Logon ID:  %4

SPN: 
 SPN Name:  %5
 Error Code:  %6

Server Information:
 Server Names:  %7
 Configured Names:  %8
 IP Addresses:  %9

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