This update enables Windows Vista to detect activation exploits that bypass product activation and that interfere with usual Windows operation. An activation exploit is a form of software that replaces or modifies authentic Windows components. When activation exploits are present on a system, it indicates that a software or hardware vendor may have tampered with genuine Windows to enable the sale of counterfeit software. Therefore, the security and the privacy of the computer are put at risk. After this update is installed, you will know if activation exploits are present on the system.

To obtain this update, visit the following Microsoft Web site, or enable the Automatic Update feature to install the latest updates:Note Installing this update does not affect the functionality of your operating system.

This update for Windows Vista detects activation exploits that may be present on a system. An activation exploit bypasses licensing and activation. This behavior allows for counterfeit copies of Windows Vista to run without ever having to be activated. Activation exploits make alterations to key Windows system files. These activation exploits affect both system stability and security.

When the update is installed, no functionality of your operating system will be affected. If no activation exploits are detected, the update silently exits. If activation exploits are detected, you will be provided a link to a Web site that describes how you can remove the activation exploits. When the activation exploits are removed, you may be asked to use a valid product key to activate your copy of Windows. If you do not want to remove the activation exploits, Windows may disable the activation exploits and then ask you to use a valid product key to activate Windows.