An update to add support to wildcard characters for the ActiveX Installer Service (AxIS) in Windows Vista
In Windows Vista, the ActiveX Installer Service (AxIS) lets a non-administrative user install an ActiveX control in Internet Explorer when the user visits a Web site. The ActiveX Installer Service determines whether ActiveX controls can be installed by checking whether the host URL that requests the ActiveX control installation is approved in the corresponding Group Policy setting. In this manner, administrators can configure the Group Policy setting to control the sites from which a user can install ActiveX controls.
Microsoft has released an update for AxIS. This update enables you to use wildcard characters when you try to add a host URL in the Group Policy setting. This makes it more convenient for you to configure the ActiveX Installer Service.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB951541.