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Event ID 4820: A Kerberos Ticket-granting-ticket (TGT) was denied because the device does not meet the access control restrictions

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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

A Kerberos Ticket-granting-ticket (TGT) was denied because the device does not meet the access control restrictions.

Event 4820
Security-Auditing
Security log
Audit
Message and fields (as Event Viewer shows them)
A Kerberos Ticket-granting-ticket (TGT) was denied because the device does not meet the access control restrictions.

Account Information:
	Account Name:		…
	Supplied Realm Name:	…
	User ID:			…

Authentication Policy Information:
	Silo Name:		…
	Policy Name:		…
	TGT Lifetime:		…

Device Information:
	Device Name:		…

Service Information:
	Service Name:		…
	Service ID:		…

Network Information:
	Client Address:		…
	Client Port:		…

Additional Information:
	Ticket Options:		…
	Result Code:		…
	Ticket Encryption Type:	…
	Pre-Authentication Type:	…

Certificate Information:
	Certificate Issuer Name:		…
	Certificate Serial Number:	…
	Certificate Thumbprint:		…

Certificate information is only provided if a certificate was used for pre-authentication.

Pre-authentication types, ticket options, encryption types and result codes are defined in RFC 4120.