Account Lockouts

I am facing so many account locks out in our organization. We have got script which notify us which computer/user locking out and we remove credentials from Credentials Manager and it still trying to lockout on same device.

Any known solution for this, please?

Many thanks in advance.
M JIT Support EngineerAsked:
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M JIT Support EngineerAuthor Commented:
@robin - Thanks for that. However these all article telling same thing, which is - how to find source of account lockouts, which is something we already have in place and works amazingly great. We also get notification. Problem is even after clearing credential manager, it still keep coming and coming from multiple sources. Cheers
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Naveen SharmaCommented:
Check the security logs on your domain controllers. This may be due to scheduled task, services or applications. Also, check the IIS logs on the Exchange server that corresponds to the connection (Outlook Anywhere, Active Sync, EWS, etc).

Could also have your password stored under the System password vault:
https://social.technet.microsoft.com/Forums/windows/en-US/e1ef04fa-6aea-47fe-9392-45929239bd68/securitykerberos-event-id-14-credential-manager-causes-system-to-login-to-network-with-invalid?forum=w7itprosecurity

Check below articles:

Active Directory: Troubleshooting Frequent Account Lockout:
https://social.technet.microsoft.com/wiki/contents/articles/23497.active-directory-troubleshooting-frequent-account-lockout.aspx

How to track and troubleshoot User Account Lockouts with LepideAuditor:
https://www.lepide.com/how-to/track-and-troubleshoot-user-account-lockouts-with-lepideauditor.html
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Shaun VermaakTechnical SpecialistCommented:
Problem is even after clearing credential manager, it still keep coming and coming from multiple sources.
Lockout policy to low? I do not think you are addressing the cause. I would for example disable credential store if it gives me a headache
https://www.experts-exchange.com/articles/29305/Active-Directory-Locked-Account-Investigation-Process.html
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M JIT Support EngineerAuthor Commented:
Thanks guys.

@Naveen - We have setup where automatically knows which user locking out from which machine. So finding the source is not problem.
@ Shaun - Thanks for your advice, we would like to keep password in credential manager, otherwise user has to enter password for every portal every time.
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Shaun VermaakTechnical SpecialistCommented:
And lockout count? What is it currently set to?
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M JIT Support EngineerAuthor Commented:
Thanks again, problem was resolved by finding locking out computer and ending user session from source computer.
after finding source computer
Thanks.
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Shaun VermaakTechnical SpecialistCommented:
If you are happy, so am I. Just remember that causing helpdesk nightmare is not the purpose of lockout policy
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M JIT Support EngineerAuthor Commented:
There were no answer to question by anyone else. I found source computer and then found application causing it. Removing password form Credentials manger helped.
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