Event-o-Pedia EventID 21 - Prevention of Group Policy Object creation.

	Event Details
	User Activity->Policy Changes->InTrust Plug-in for Active Directory->Protected Change Attempts->EventID 21 - Prevention of Group Policy Object creation.

EventID 21 - Prevention of Group Policy Object creation.

Linked Event:

EventID 21 - Prevention of Group Policy Object creation.

Sample:

Event Type:     Warning
Event Source:   ITAD GPO Changes
Event Category: None
Event ID:       21
Date:           10/29/2009
Time:           10:23:13
User:           RESEARCH\DKrane
Computer:       DC1
Description:    
ChangeAuditor for Active Directory prevented creation of Group Policy Object.
	Client Computer : 10.0.0.1
	GPO GUID : {A65A553B-EE83-4A49-AFE4-652777512D1F}
	Request ID : {3674D52D-7BCD-42F7-A3F5-45484479E8C8}
===========================
Description template:
===========================
ChangeAuditor for Active Directory prevented creation of Group Policy Object.
   Client Computer : %3
   GPO GUID : %1
   Request ID : %2

Log Type:

Windows Event Log

Uniquely Identified By:

Log Name:

InTrust for AD

Filtering Field	Equals to Value
Source	ITAD GPO Changes
EventId	21

Field Matching

Field	Description	Stored in	Sample Value
When	At what date and time a user activity originated in the system.	DateTime	10.10.2000 19:00:00
Who	Account or user name under which the activity occured.	User	RESEARCH\Alebovsky
What	The type of activity occurred (e.g. Logon, Password Changed, etc.)	"Attempt to create Group Policy Object"	Attempt to create Group Policy Object
Where	The name of the workstation/server where the activity was logged.	Computer	DC1
Where From	The name of the workstation/server where the activity was initiated from.	Client Computer	10.0.0.1
Severity	Specify the seriousness of the event.	"Medium"	Medium
WhoDomain		-
WhereDomain		-
Policy Name	The name of the affected policy.	-
GPO Name	The name of GPO where some policy was changed	GPO GUID	{A65A553B-EE83-4A49-AFE4-652777512D1F}
Value Before	The policy value before the change	-
Value After	The policy value after the change	-
Result	Successful or Failed	"Protected"	Protected