Windows Security Log Event ID 5168
Operating Systems Windows 2008 R2 and 7
Windows 2012 R2 and 8.1
Windows 2016 and 10
Category
 • Subcategory
Object Access
 • File Share
Type Success
Failure
Corresponding events
in Windows 2003
and before
 
Discussions on Event ID 5168
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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.

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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We have not been able to produce this event.

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