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Event ID 4780: The ACL was set on accounts which are members of administrators groups

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

The ACL was set on accounts which are members of administrators groups.

Event 4780
Security-Auditing
Security log
Audit
Message and fields (as Event Viewer shows them)
The ACL was set on accounts which are members of administrators groups.


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

Target Account:
	Security ID:		…
	Account Name:		…
	Account Domain:		…

Additional Information:
	Privileges:		…

Every hour, the Windows domain controller that holds the primary domain controller (PDC) Flexible Single Master Operation (FSMO) role compares the ACL on all security principal accounts (users, groups, and machine accounts) present for its domain in Active Directory and that are in administrative groups against the ACL on the AdminSDHolder object.  If the ACL on the principal account differs from the ACL on the AdminSDHolder object, then the ACL on the principal account is reset to match the ACL on the AdminSDHolder object and this event is generated.