It seems that Microsoft just can’t help itself. As part of its regular Patch Tuesday, Microsoft released an update for its various toolbars, and this update came with more than just documented fixes. The update also installs an add-on for Internet Explorer and an extension for Mozilla Firefox, both without the user’s permission.
The update is listed as “Update for Microsoft Search Enhancement Pack” which doesn’t have any relation to browser add-ons or extensions. In addition, the update is marked as Important instead of Optional which means that it’s likely to be installed automatically, depending on the users’ update settings.
Users starting seeing this item as installed due to the fact that Firefox will show newly installed extensions on restart ( IE does not do this ). Apparently Microsoft is not even aware of the issue …