Maximum security log size

This security setting specifies the maximum size of the security event log, which has a theoretical maximum of 4 GB. Practically the limit is lower (~300MB).


Log file sizes must be a multiple of 64 KB. If you enter a value that is not a multiple of 64 KB, Event Viewer will round he log file size up to a multiple of 64 KB.
This setting does not appear in the Local Computer Policy object.
Event Log size and log wrapping should be defined to match the business and security requirements you determined when designing your enterprise security plan. Consider implementing these Event Log settings at the site, domain, or organizational unit level, to take advantage of Group Policy settings.

Policy path: 

Computer Configuration\Windows Settings\Security Settings\Event Log


Note: This setting does not appear in the Local Computer Policy object. Important: Modifying this setting may affect compatibility with clients, services, and applications. For compatibility information about this setting, see the "Event Log: Maximum sec


For the Windows Server 2003 family, 16 MB; for Windows XP Professional Service Pack 1, 8 MB; for Windows XP Professional, 512 KB.

Supported on: 

Only Windows XP SP2, Windows Server 2003

Registry settings: 

Event Log security settings are not registry keys.

Reboot required: 


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