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Continuous domain account lock out.

Posted on 2016-11-09
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Last Modified: 2016-11-16
I've dealt with these type of issues many times, and usually it comes down to where a user did not change their domain password on a mobile device after changing their password on their computer, which cause the continuous lock out.

This is my first experience with a user having continuous domain lock out issue. See log below. I am trying to trace the source. Per user, she does not have a mobile device or have another session on another computer. Is lsass.exe a suspicious .exe? How can I trace the source to find out where the lock out is occuring? She did mention that the auto-discover option does pop up every now and then.

2016-11-09_12-18-26.png
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Question by:joukiejouk
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Mohammed Khawaja earned 350 total points
ID: 41881277
Try the following:
- Ensure the account is unlocked
- Have the user login
- Delete mapped drives
- Delete saved credentials in Control Panel
- Wait 30 minutes and see if problem happens
- If account doesn't lock they have the user try one application at a time to find out the offending application
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Assisted Solution

by:Senior IT System Engineer
Senior IT System Engineer earned 150 total points
ID: 41881969
Yes, usually it is saved proxy credentials or some 3rd party application which still using or saving the old credentials.
Typically Apple iTunes.
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Author Closing Comment

by:joukiejouk
ID: 41890056
It was discovered that the Mimecast auhtication add-on in Outlook was causing this issue.
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