Event ID 4663: An attempt was made to access an object

Windows Event ID Lookup: What Windows event IDs mean: 4625, 4624, 4740, 6008, 41, 7045, 1102 and 3,000 more, with Windows' own message text, the fields and what to check.

Look up a Windows event ID from Event Viewer, a SIEM alert or a log export: what it means, the fields it records, and what to check. Many IDs are used by more than one source (event 41 is both a Kernel-Power crash and a boot error), so every definition is shown, the one people usually mean first. The message text is Windows' own, read from the event providers of Windows 10.0.26200.0, 2026-10-28; the notes are ours, based on Microsoft's security auditing reference.

Try: 4625, 4624, 4740, 6008, 41, 1074, 7045, 1102, 4104, 1149

An attempt was made to access an object.

Event 4663

Security-Auditing

Security log

Audit Success

An object (file, folder, registry key) was accessed. Needs Object Access auditing and a SACL on the object.

What to check: Accesses shows the type (read, write, delete).

Related: 4656, 4660

Message and fields (as Event Viewer shows them)

An attempt was made to access an object.

Subject:
	Security ID:		…
	Account Name:		…
	Account Domain:		…
	Logon ID:		…

Object:
	Object Server:		…
	Object Type:		…
	Object Name:		…
	Handle ID:		…
	Resource Attributes:	…

Process Information:
	Process ID:		…
	Process Name:		…

Access Request Information:
	Accesses:		…
	Access Mask:		…