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Active Directory - Domain User Auto Lock

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#1 Shahrul


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Posted 20 July 2017 - 04:12 AM



I have AD server running on window server 2008 R2 Standard. Recently, our user having issue like account auto lock after 1st or 2nd attempt and sometimes account have been lock by itself when user want to login.


I don`t have any clue how to check on this issue, please help.


Thanks in advance.

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#2 sflatechguy


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Posted 27 July 2017 - 10:09 AM

The only thing that would lock their account is if they entered their password incorrectly. Check the account lockout settings in the default domain group policy. See if the policy is set to require an admin to unlock the user's account -- if the account lockout duration is set to zero, then users must contact an admin to have their account unlocked.


You should also look at the account lockout threshhold (how many failed attempts before the account is locked) and the reset lockout counter (the time the user must wait before the lockout is lifted and they can try their password again).


You can also look at the Security logs in Event Viewer on both the computer the user tries to log in on, and the domain controllers the users authenticate to.

#3 DelPomerinke


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Posted 03 August 2017 - 02:08 PM

AD account lockouts can often be caused by Mobile devices  (Email sync) or configuring Services to run as user account and then after a force PW Update will use 'old' PW and lock the account.

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