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event id 521 Unable to log events to security

Posted on 2011-10-04
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Last Modified: 2012-05-12
Hi
Some users always lock out in active directory
When i looking for the security logs
i getting this message:

Unable to log events to security log:
       Status code:            0xc0000008
       Value of CrashOnAuditFail:      0
       Number of failed audits:      56


Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
  <Provider Name="Security" />
  <EventID Qualifiers="0">521</EventID>
  <Level>0</Level>
  <Task>1</Task>
  <Keywords>0xa0000000000000</Keywords>
  <TimeCreated SystemTime="2011-10-04T15:16:24.000000000Z" />
  <EventRecordID>1157242617</EventRecordID>
  <Channel>Security</Channel>
  <Computer>dc01</Computer>
  <Security UserID="S-1-5-18" />
  </System>
- <EventData>
  <Data>0xc0000008</Data>
  <Data>0</Data>
  <Data>56</Data>
  </EventData>
  </Event>

i cant figure it out what cuse the locking of those users.

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Question by:Senx
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by:
David Johnson, CD, MVP earned 1000 total points
ID: 36914924
is your security log full?
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by:Senx
ID: 36922662
Yes Thx
i just figure it out
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