Hi,
as said this is not VMware related. You should get the Microsoft Account Lock Tools: http://www.microsoft.com/en-us/download/details.aspx?id=18465
And take a look which Domain Controller locks the account and then take a look into its logs to identify the source of the wrong password. It's often a network drive or a network printer with the wrong credentials. Windows will try to establish the connection multiple times with the wrong credentials and the account gets locked.
Regards