How to audit service password change?

Have a client with Server 2003, and 2 services run under user who is a domain administrator.  No one logs in as this user.  Occasionally the services stop and when I try to restart them, it can't due to a logon failure.  When I change the password in the service to what it should be, the service can start.

The domain account password isn't being changed in Active Directory, just the service it seems.

What is the best way to audit when a password is changed for a service?
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Use auditing on the corresponding registry key for that service below HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services
You will see what process/user did change the info if you log writes.
CTS-TechAuthor Commented:
Do I do that in the registry?
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Yes. Rightclick HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services, choose "permissions" ->advanced ->auditing ->audit writes to that key for the group "everyone". To activate auditing, you need to set also the following:
->secpol.msc ->loc. pol. ->aud. pol. -> audit object access ->set to "enabled". From then on, writes to that key are logged in the security event log which you find after starting eventvwr.exe.
CTS-TechAuthor Commented:
I found the issue.  Previous IT guy had Group Policy permissions set to only allow certain accounts to login as a service.

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CTS-TechAuthor Commented:
Thanks guys
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Windows Server 2003

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