Windows Vista and later versions of Windows allow audit policy to be managed in a more precise way using audit policy subcategories. Setting audit policy at the category level will override the new subcategory audit policy feature. Group Policy only allows audit policy to be set at the category level, and existing group policy may override the subcategory settings of new machines as they are joined to the domain or upgraded to Windows Vista or later versions. To allow audit policy to be managed using subcategories without requiring a change to Group Policy, there is a new registry value in Windows Vista and later versions, SCENoApplyLegacyAuditPolicy, which prevents the application of category-level audit policy from Group Policy and from the Local Security Policy administrative tool. If the category level audit policy set here is not consistent with the events that are currently being generated, the cause might be that this registry key is set. Default: Enabled Counter Measure: Enable audit policy subcategories as needed to track specific events. Potential Impact: The individual audit policy subcategories that are available in Windows Vista are not exposed in the interface of Group Policy tools. Administrators can deploy a custom audit policy that applies detailed security auditing settings to Windows Vista-based client computers in a Windows Server 2003 domain or in a Windows 2000 domain. If after enabling this setting, you attempt to modify an auditing setting by using Group Policy, the Group Policy auditing setting will be ignored in favor of the custom policy setting. To modify auditing settings by using Group Policy, you must first disable this key. Important: Be very cautious about audit settings that can generate a large volume of traffic. For example, if you enable either success or failure auditing for all of the Privilege Use subcategories, the high volume of audit events generated can make it difficult to find other types of entries in the Security log. Such a configuration could also have a significant impact on system performance." Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options\Audit: Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings (2) REG: NO REGISTRY INFO