Event Details
Operating System->Microsoft Windows->Built-in logs->Windows 2000-2003->Security Log->Account Management->EventID 643 - Domain Policy Changed [Win 2000 / XP]
EventID 643 - Domain Policy Changed [Win 2000 / XP]
Indicates that a domain policy was successfully changed by "caller user". There is no Failure Audit form of this audit event record.

Find more information about this event on ultimatewindowssecurity.com.

Corresponding events on other OS versions:
Windows 2003
Windows 2008
        Event Type:     Success Audit
        Event Source:   Security
        Event Category: Account Management
        Event ID:       643
        Date:           12/14/2009
        Time:           07:58:08
        User:           NT AUTHORITY\SYSTEM
        Computer:       DCCC1
        Domain Policy Changed: Password Policy  modified
        Domain:		LOGISTICS
        Domain ID:	%{S-1-5-21-746137067-343818398-839522115}
        Caller User Name:	DCCC1$
        Caller Domain:	LOGISTICS
        Caller Logon ID:	(0x0,0x3E7)
        Privileges:	-
Log Type: Windows Event Log
 Uniquely Identified By:
Log Name: Security
Filtering Field Equals to Value
OSVersion Windows 2000
Windows XP
Category Account Management
Source Security
EventId 643
Field Matching
FieldDescriptionStored inSample Value
DateTime Date/Time of event origination in GMT format. DateTime 10.10.2000 19:00:00
Source Name of an Application or System Service originating the event. Source Security
Type Warning, Information, Error, Success, Failure, etc. Type Success
User Domain\Account name of user/service/computer initiating event. User RESEARCH\Alebovsky
Computer Name of server workstation where event was logged. Computer DC1
EventID Numerical ID of event. Unique within one Event Source. EventId 576
Description The entire unparsed event message. Description Special privileges assigned to new logon.
Log Name The name of the event log (e.g. Application, Security, System, etc.) LogName Security
Category A name for a subclass of events within the same Event Source. Category Logon/Logoff
Caller User Name Account initiating action InsertionString4 Alebovsky
Caller Domain Domain of the account initiating action InsertionString5 RESEARCH
Caller Logon ID A number uniquely identifying the logon session of the user initiating action. This number can be used to correlate all user actions within one logon session. InsertionString6 (0x0,0x59DF36)
Domain Policy Changed The name of the affected policy InsertionString1
Domain Name The name of the domain whose policy has been changed InsertionString2 ANNADOMAIN
Domain ID The SID of the domain whose policy has been changed. In the event message it is normally resolved to the Domain Name. InsertionString3 %{S-1-5-21-746137067-343818398-839522115}
Privileges Contains the list of privileges. The purpose of this field is unknown. In most cases it is empty. InsertionString7 -
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