Multiple accounts locked random everyday

Hi guys,

I have a simple question, everyday in my company I have 3 o 4  locked accounts. so I have to go to active directory user and computer and it's always  locked account is on.  it happens random. but sommetime is the same person during the week.
I have a windows server 2008 and user run think clients (Terminal Services).
any ideas what is happening?

Thanks.
nttechAsked:
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yelbaglfCommented:
This can be caused by multiple things, and these issues are never fun tracking down.  That being said, have a look here.  This is a great place to start.
http://technet.microsoft.com/en-us/library/cc773155(WS.10).aspx

Some tools that are very useful when troubleshooting scenarios such as these can be found here.
http://www.microsoft.com/downloads/en/details.aspx?FamilyId=7AF2E69C-91F3-4E63-8629-B999ADDE0B9E&displaylang=en

From this toolkit, you can use LockoutStatus.exe to determine which DC is causing the lockout.  From there, you can enable logging, which may provide useful information.  I have found that more times than not, this is a TS profile issue, meaning the old password is cached somewhere in the profile or an application.  Usually clearing out all local and roaming TS profiles for the user helps resolve it.

Another thing to try would be to turn off caching on the local user's machine.  The old password may still be cached.  Turning caching off would prevent it from being used.
http://support.microsoft.com/kb/172931
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nttechAuthor Commented:
Thanks for your info. I 'd do it and let you know.
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connectexCommented:
I've seen this commonly occurs when the user has logged on to multiple systems. Then a password change occurs. Now the oldest logged on system is attempting to logon using the previous password. Therefore the user's account locks out. Check your security logs for a possible system that's attempting to logon as the problem user.

-Matt-
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Windows Server 2008

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