What does event ID 4740 stand for?

Table of Contents

A user account was locked out
4740: A user account was locked out. The indicated user account was locked out after repeated logon failures due to a bad password. See event ID 4767 for account unlocked.

What is Microsoft Security Auditing 4740?

For 4740(S): A user account was locked out. Important For this event, also see Appendix A: Security monitoring recommendations for many audit events. Because this event is typically triggered by the SYSTEM account, we recommend that you report it whenever “Subject\Security ID” is not SYSTEM.

How do I find my event ID 4740?

Open the event log viewer of the DC. Go to the security logs, and search for the Event ID 4740.

What is Caller computer name?

For example the field “Caller Computer Name” contains the name of the computer from which the failed logons that cause blocking are originated. Then you need to go to the target computer and inspect the event logs there to determine why this machine is trying to logged in with invalid credentials.

How do you find a computer from which an account was locked?

Find Locking Computer Using Event Logs Expand “Windows Logs” then choose “Security“. Select “Filter Current Log…” on the right pane. Replace the field that says “” with “4740“, then select “OK“. Select “Find” on the right pane, type the username of the locked account, then select “OK“.

Why is my account getting locked out?

The common causes for account lockouts are: End-user mistake (typing a wrong username or password) Programs with cached credentials or active threads that retain old credentials. Service accounts passwords cached by the service control manager.

How do I trace user lockout?

How to: Trace the source of a bad password and account lockout in AD

Step 1: Download the Account Lockout Status tools from Microsoft.
Step 2: Run ‘LockoutStatus.exe’
Step 3: Choose ‘Select Target’ from the File menu.
Step 4: Check the results.
Step 5: Check the Security log on one of these DCs.

How do I find out who is locked to a user account in Active Directory?

Finding Locked Out Accounts in Active Directory with PowerShell. To search for locked out accounts, you can run the Search-AdAccount command using the LockedOut parameter.

How do I resolve my account lockout?

How to Resolve Account Lockouts

Run the installer file to install the tool.
Go to the installation directory and run the ‘LockoutStatus.exe’ to launch the tool.
Go to ‘File > Select Target…’
Go through the details presented on screen.
Go to the concerned DC and review the Windows security event log.

Why are user accounts locked out?

What does the PDC emulator do?

The PDC Emulator responds to authentication requests, changes passwords, and manages Group Policy Objects.

How do I find out which computer is locked?

How do you determine where a service account is being used?

The only way to do this is by querying every machine in the network. Use WMI with PowerShell. It can be done with VBScrpt but is much harder. This will list all accounts by server that are using the specified account.

How do you determine what is locking out a user account?

How to: Identify the source of Account Lockouts in Active Directory

Step 1: Search the domain controller possessing the PDC Emulator Role.
Step 2: Search for Event ID 4740.
Step 3: Apply appropriate filters.
Step 4: Find the locked out user event report from the log.