Windows Security Log Event ID 521

521: Unable to log events to security log

On this page

• Description of this event
• Field level details
• Examples
• Discuss this event
• Mini-seminars on this event

This event is logged if Windows was unable to write events to the Security event log.

Free Security Log Resources by Randy

• Free Security Log Quick Reference Chart
• Windows Event Collection: Supercharger Free Edtion
• Free Active Directory Change Auditing Solution
• Free Course: Security Log Secrets

Description Fields in 521

• Status code: The code of the reason of the error. Typical values might include:
  • 0xc0000005 (STATUS_ACCESS_VIOLATION)
  • 0xc0000008 (STATUS_INVALID_HANDLE)
  • 0xc0000017 (STATUS_NO_MEMORY)
• Value of CrashOnAuditFail: Whether the system should halt when not able to write to security log. See event 4906 for possible values.
• Number of failed audits: The number of events affected.

Supercharger Free Edition

Your entire Windows Event Collection environment on a single pane of glass.

Free.

 

 

Upcoming Webinars Active Directory Password Management: Understanding the Controls, Risks and Gaps

Additional Resources

•	Event IDs
•	All Event IDs
•	Audit Policy