Change of Domain password, now I get an error in event log

I have recently changed the Domain administrator password that we use to log onto servers, run backups etc...Since changing this password I now get the following error in the Event log relating to Group Policy

Windows cannot access the file gpt.ini for GPO CN={31B2F340-016D-11D2-945F-00C04FB984F9},CN=Policies,CN=System,DC=hsfc,DC=hpoolsfc,DC=ac,DC=uk. The file must be present at the location <\\hsfc.hpoolsfc.ac.uk\sysvol\hsfc.hpoolsfc.ac.uk\Policies\{31B2F340-016D-11D2-945F-00C04FB984F9}\gpt.ini>. (The system detected a possible attempt to compromise security. Please ensure that you can contact the server that authenticated you. ). Group Policy processing aborted.

The account in question is being locked out every five minutes so obviously something is trying to access it with its old password. Does anyone have any ideas what I need to change in order to stop the above error from occurring?

Thanks
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brookesmAsked:
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FC01Commented:
Do you leave your servers\workstations logged in as administration.  If so, have you logged out of all your machines and  logged back in with the new password.  Also, do you have any services or scheduled jobs set to start with the admin account?
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abraham808Commented:
You must be using the administrator account for a service somewhere.  

You can use the program EventCombNT to figure out which account or which server this is happening on.
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Brian PiercePhotographerCommented:
Problems like this can occur id you have setup services or scheduled tasks to run under the Administrator credentials, since the password has now changed the service/task is unable to authenticate. Best practice dictates that to create dedicated accounts for services/tasks and set the password and account to "does not expire"

You will need to locate the service/task and change the credentials, the event log should indicate where the problem is - look for an account logon failure
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Windows Server 2003

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