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DC LOCKDOWN HOW TO
DC LOCKDOWN WINDOWS

Security ID & Account Name – This is the name of the locked out account.

In the screenshot above I highlighted the most important details from the lockout event. The event logs should now only display the 4740 events.Ĭlick on one of the 4740 events to display the details. Next, enter 4740 into the Includes/Excludes box and click “OK”. To display all of the 4740 events, open the event viewer on a domain controller, right click the security logs and select “Filter Current Log”. This event is not replicated so you either need to search all domain controllers or find the DC that holds the PDC emulator FSMO role. Event Lockout ID 4740 on Domain ControllerĪ domain controller will log event 4740 when an AD account is locked out. Sometimes event 4740 does not log the source computer and the Kerberos logs provide additional details. In addition, the Kerberos logs are enabled which will log authentication failures with the lockout.

Audit Other Logon/Logon Events – Success and FailureĪuditing is now turned on and event 4740 will be logged in the security events logs when an account is locked out.

Audit Account Lockout – Success and Failure.

DC LOCKDOWN WINDOWS

The settings below will enable lockout event 4625 and failed logon attempts on client computers.īrowse to Computer Configuration -> Policies -> Windows Settings -> Security Settings -> Advanced Audit Policy Configuration – Logon/Logoff You can also create a new GPO on the “Domain Controllers” OU if you prefer to not edit the default GPO.īrowse to computer configuration -> Policies ->Windows Settings -> Security Settings -> Advanced Audit Policy Configuration -> Audit Policies -> Account ManagementĮnable success and failure for the Audit User Account Management policy.Ĭomputer configuration -> Policies -> Windows Settings -> Security Settings -> Advanced Audit Policy Configuration -> Audit Policies -> Account LogonĮnable Success and Failure for Audit Kerberos Authentication Service. Modify Default Domain Controllers Policyīrowse to the Default Domain Controllers Policy, right-click, and select edit. This can be from the domain controller or any computer that has the RSAT tools installed. See the steps below to enable the audit log policy. Refer to the Account Lockout Policy configuration guide for steps on creating a lockout policy.

DC LOCKDOWN HOW TO

How to Quickly Find the Source of Account Lockoutsīefore Windows will log AD lockout events the lockout policy and audit logs need to be configured.Lockout Event ID 4625 on Servers and Workstations.Lockout Event ID 4740 on Domain Controllers.In this post, I’ll show you how to quickly find all lockout events and how to find the source of account lockouts. These events are helpful for troubleshooting and auditing lockout events. The lockout event ID provides important details about the lockout, such as the account name, time of the event, and the source computer (caller computer name). Event ID 4740 is added on domain controllers and the event 4625 is added to client computers. When an Active Directory user account is locked, an account lockout event ID is added to the Windows event logs.