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Event ID: 643 Source: Security

Source
Description
Domain Policy Changed:
Password Policy modified
Domain: CORPDOM Domain ID: %{S-1-5-21-1390850448-2335789268-393128203}
Caller User Name: APPSERVER$
Caller Domain: ALTDOMAIN
Caller Logon ID: (0x0,0x3E7)
Privileges:
Comments
 
This event normally indicates a succesful change to the Windows 2000 AD security policies. However, this also is recorded when the Group Policies are applied (event id 1704 would indicate a successful application of Group Policies). As per a newsgroup posting of a Microsoft intrusion detection engineer, this is "normal behaviour" for Windows 2000.

From a newsgroup post: "Group policy is applied every 16 hours by default. If you have set any of the "security options" in a policy from the domain, then expect to see this event when those options are set".

See ME174074 and ME255295 for more details.

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