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Deus Ex Machina » Eventlog » Event 675 - Security

Security - 675


Description »
Pre-authentication failed:
 	User Name:	Bob.Jones
 	User ID:		NTDOMAIN\Bob.Jones
 	Service Name:	krbtgt/NTDOMAIN
 	Pre-Authentication Type:	0x2
 	Failure Code:	0x18
 	Client Address:
Data formatted as » None

This event shows that kerberos has failed an authentication attempt.

The reason for the failure is in the "failure code". These are defined in RFC 4120. Common values you will see include: