When you deploy the IE ACA update, it disables the “Click to activate” behavior of the Internet Explorer ActiveX update that is contained in update KB942615. The other security updates that are contained in update KB942615 are still present and are still functional.

We strongly recommend that you deploy this IE ACA update only to computers for testing before the “Click to activate” behavior is permanently removed in the Internet Explorer cumulative update that is planned for April 2008. Removing the “Click to activate” behavior from Internet Explorer will require no changes to existing Web pages. Additionally, the removal of this behavior will not require new actions for developers to create new pages. All pages that previously required the “Click to activate” behaviorwill no longer require that the user manually enables an ActiveX control. ActiveX controls will continue to function as they did before this change was made to the “Click to activate” behavior.