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I obverved the following event on my domain controller,<br />
Do someone know the meaning of the following Event?<br />
Is there any place on the web where we can find microsoft event description? microsoft site or any?<br />
<br />
Event Type: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Failure Audit<br />
Event Source: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Security<br />
Event Category: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Account Logon <br />
Event ID: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;675<br />
Date: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2008-02-28<br />
Time: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1:38:43 PM<br />
User: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NT AUTHORITY\SYSTEM<br />
Computer: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;domain controller name&gt;<br />
Description:<br />
Pre-authentication failed:<br />
&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;User Name: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nst<br />
&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;User ID: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DOMAIN\user<br />
&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service Name: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;krbtgt/DOMAIN<br />
&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pre-Authentication Type: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0x2<br />
&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Failure Code: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0x12<br />
&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Client Address: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;xx.xx.xx.xx
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I obverved the following event on my domain controller,
Do someone know the meaning of the following Event?
Is there any place on the web where we can find microsoft event description? microsoft site or any?

Event Type:	Failure Audit
Event Source:	Security
Event Category:	Account Logon 
Event ID:	675
Date:		2008-02-28
Time:		1:38:43 PM
User:		NT AUTHORITY\SYSTEM
Computer:	<domain controller name>
Description:
Pre-authentication failed:
 	User Name:	nst
 	User ID:		DOMAIN\user
 	Service Name:	krbtgt/DOMAIN
 	Pre-Authentication Type:	0x2
 	Failure Code:	0x12
 	Client Address:	xx.xx.xx.xx

Pre-authentication failed EventID:675 Failure Code:0x12

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).