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Domain Admin Account Gets Locked from Old Computer

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#1 forkman00


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Posted 17 April 2017 - 09:28 AM

Hi all, first post.


We have a domain admin who periodically gets his AD account locked through no action of his own. The security logs indicate that his account is being locked by his old computer (W10x64), which was cleaned up and redeployed to a different user.


His user profile was removed prior to redeployment and we think anything related to his domain admin account was removed. We ran disk cleanup/CCleaner on the machine and deleted some obsolete program files. But his account continues to become locked out.


Interestingly, there are no failed logon events (ID 4625) generated in the logs, only the lockout event (ID 4740).


Any idea why this is happening?



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#2 Kilroy


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Posted 17 April 2017 - 01:26 PM

Welcome to Bleeping Computer.


Redeployment should include reimaging to prevent issues like this one.  Reimaging also ensures a know install.


It may be possible that something the Admin installed on the machine is attempting to use his credentials for something, either file or web access would be my guess.

Edited by Kilroy, 17 April 2017 - 01:26 PM.

#3 chadatcoderedcomp


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Posted 17 April 2017 - 03:05 PM

Could always attempt a Windows Clean boot in an attempt to rule out any third party applications causing issues. If all goes well, simply turn on a few at a time, wait and watch, repeat until you find the culprit.


Windows Clean Boot -                         https://support.microsoft.com/en-us/kb/929135




chad [at] coderedcomputing.com

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