Windows Security Log Event ID 594

594: A handle to an object has been duplicated

On this page

• Description of this event
• Field level details
• Examples

This simply means that the program obtained another handle to an object (e.g. file) that it already had open under a different handle. This handle may be passed on to a child process but in any case it will have the same level of access as the handle the file was originally opened under. To determine what file is involved, find the accompanying event 560 for with a handle ID that matches this event's source handle ID.

Microsoft's comments:

Expected activity.

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 594

• Source Handle ID:
• Source Process ID:
• Target Handle ID:
• Target Process ID:

Supercharger Enterprise

Load Balancing for Windows Event Collection

 

 

Upcoming Webinars Protecting Data On USB Drives: Hardware Options, Windows BitLocker and Mac APFS and Beyond The Changing Landscape of Authentication and Logon Tracking in Hybrid Environments of Entra and AD

Additional Resources

•	Event IDs
•	All Event IDs
•	Audit Policy