This update eliminates the "Active Setup Control" security vulnerability, and is discussed in Microsoft Security Bulletin MS99-048. Download now to prevent an outside user from using a particular ActiveX control to automatically run a malicious e-mail attachment that is saved on your computer.
For more information about this update, please read Microsoft Security Bulletin MS99-048. (This site is in English.)
Note Mail reader applications that are affected by this vulnerability include Outlook and Outlook Express.