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How to tell what is locking an account out

Posted on 2011-02-14
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Last Modified: 2012-06-21
I have a service account that runs scheduled tasks and services.  It is being locked out every Saturday at 11 PM, but I don't know what is locking it out.  I'm needing to know what machine/IP the invalid attempts are coming from.  I know Microsoft has the Account Lockout & Management tools, but I'm running Active Directory on Server 2008.  Will these tools still work?  If so how do I put them in place?  Is there a better option out there?
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Question by:jdouthit
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Cuteadder earned 500 total points
ID: 34888375
http://www.microsoft.com/downloads/en/details.aspx?FamilyId=7AF2E69C-91F3-4E63-8629-B999ADDE0B9E&displaylang=en

event comb will scan all your Domain controllers and tell you what computer and what type of event...
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by:Mike Kline
ID: 34888385
Those tools should still work...haven't put them on a 2008 box myself.   A network trace can also help in these situations (netmon or wireshark).

Not sure if you have seen this blog but it is a good overview   http://blogs.technet.com/b/instan/archive/2009/09/01/troubleshooting-account-lockout-the-pss-way.aspx?wa=wsignin1.0

Thanks

Mike
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by:jdouthit
ID: 34888395
What criteria should I be entering in eventcomb to search for the failed attempts?  I don't know what Event ID this would produce.
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by:Cuteadder
ID: 34888412
there's a preset for looking for locked out accounts and the events around it...

do that and post the results
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by:Mike Kline
ID: 34888429
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Author Comment

by:jdouthit
ID: 34888855
I used the preset search for locked accounts on event comb, but it didn't find anything.  The account was locked out on 2-12-11.  Our event logs fill up so fast we usually only have items for the last 4-6 hours on a business day.
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by:Cuteadder
ID: 34889512
unlock the account and next time it locks out jump on the issue..
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