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4906(S): The CrashOnAuditFail value has changed.

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Event 4906 illustration

Subcategory: Audit Policy Change

Event Description:

This event generates every time CrashOnAuditFail audit flag value was modified.

This event is always logged regardless of the "Audit Policy Change" sub-category setting.

More information about CrashOnAuditFail flag can be found here.

Note  For recommendations, see Security Monitoring Recommendations for this event.


Event XML:

- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
 <Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" /> 
 <EventID>4906</EventID> 
 <Version>0</Version> 
 <Level>0</Level> 
 <Task>13568</Task> 
 <Opcode>0</Opcode> 
 <Keywords>0x8020000000000000</Keywords> 
 <TimeCreated SystemTime="2015-10-01T00:45:07.048458800Z" /> 
 <EventRecordID>1049529</EventRecordID> 
 <Correlation /> 
 <Execution ProcessID="516" ThreadID="532" /> 
 <Channel>Security</Channel> 
 <Computer>DC01.contoso.local</Computer> 
 <Security /> 
 </System>
- <EventData>
 <Data Name="CrashOnAuditFailValue">1</Data> 
 </EventData>
 </Event>

Required Server Roles: None.

Minimum OS Version: Windows Server 2008, Windows Vista.

Event Versions: 0.

Field Descriptions:

New Value of CrashOnAuditFail [Type = UInt32]: contains new value of CrashOnAuditFail flag. Possible values are:

  • 0 - The feature is off. The system does not halt, even when it cannot record events in the Security Log.

  • 1 - The feature is on. The system halts when it cannot record an event in the Security Log.

  • 2 - The feature is on and has been triggered. The system halted because it could not record an auditable event in the Security Log. Only members of the Administrators group can log on.

Security Monitoring Recommendations

For 4906(S): The CrashOnAuditFail value has changed.

  • Any changes of CrashOnAuditFail audit flag that are reported by this event must be monitored, and an alert should be triggered. If this change was not planned, investigate the reason for the change.