If the user changes their password on one of the computers, programs that are running on the other computers may continue to use the original password. Programs that are running on those computers may access network resources with the user credentials of that user who is currently logged on. User logging on to multiple computers: A user may log onto multiple computers at one time.You can then configure the service control manager to use the new password and avoid future account lockouts. To determine whether this is occurring, look for a pattern in the Netlogon log files and in the event log files on member computers. This is because the computers that use this account typically retry logon authentication by using the previous password. If you reset the password for a service account and you do not reset the password in the service control manager, account lockouts for the service account occur. Service accounts: Service account passwords are cached by the service control manager on member computers that use the account as well as domain controllers.Programs: Many programs cache credentials or keep active threads that retain the credentials after a user changes their password.To avoid false lockouts, check each computer on which a lockout occurred for the following behaviors: Found this in my internal knowledge base, last point in this list (old email connections) worked for me a couple of weeks ago.
