AD account for user keeps locking out

AD account keeps locking out few times a day.
We don't know which device is causing log outlook.

I have cleared out saved password from server browsers and credential Manager in local machine.

Is there a way to find out which device is causing lock out?
And free apps or power shell command?
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

check the event ID 4740 on Domain controller. you will be able to find out the device from there.
Satish AutiSenior System AdministratorCommented:
use account lockout status utility to identify on which server it's getting locked.
As you cleared all stored password , see if there is any map drive configure to use old credentials also check if any mobile device  is configured with old passwords.
Determine the Perfect Price for Your IT Services

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden with our free interactive tool and use it to determine the right price for your IT services. Download your free eBook now!

Ajit SinghCommented:
There may be many causes for account locked out, like:

user's account in stored user name and passwords
user's account tied to persistent mapped drive
user's account as a service account
user's account used as an IIS application pool identity
user's account tied to a scheduled task
un-suspending a virtual machine after a user's pw as changed

For more refer KB article:

What are the common root causes of account lockouts and do I resolve them:

Identify the source of Account Lockouts in Active Directory:

Troubleshooting account lockout the Microsoft PSS way:

Hope this helps!

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Shaun VermaakTechnical Specialist/DeveloperCommented:
Ajit SinghCommented:
No further question from author. Please post back if you have.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Active Directory

From novice to tech pro — start learning today.