Toolkit to Disable Automatic Delivery of Internet Explorer 8

To help our customers become more secure and up-to-date, Microsoft will distribute Windows Internet Explorer 8 as a high-priority update through Automatic Updates for Windows XP Service Pack 2 (SP2) and higher, Windows XP Professional x64 Edition, Windows Server 2003 SP2 for x64 and x86, Windows Vista for x64 and x86, Windows Vista SP1 for x64 and x86, and Windows Server 2008 for x64 and x86. This Blocker Toolkit is intended for organizations that would like to block automatic delivery of Internet Explorer 8 to machines in environments where Automatic Updates is enabled. The Blocker Toolkit will not expire.

Download: Toolkit to Disable Automatic Delivery of Internet Explorer 8.
Note:

• For computers running Windows XP or Windows Server 2003, the Blocker Toolkit prevents the machine from receiving Internet Explorer 8 as a high-priority update via Automatic Updates and the Express install option on the Windows Update and Microsoft Update sites; Internet Explorer 8 will be listed as an optional update with the Custom install option.
• For computers running Windows Vista or Windows Server 2008, the Blocker Toolkit prevents the machine from receiving Internet Explorer 8 as an important update via Automatic Updates on the Windows Update and Microsoft Update sites; Internet Explorer 8 will be listed as an optional update.
• The Blocker Toolkit will not prevent users from manually installing Internet Explorer 8 as a Recommended update from the Windows Update or Microsoft Update sites, from the Microsoft Download Center, or from external media.
• Organizations do not need to deploy the Blocker Toolkit in environments managed with an update management solution such as Windows Server Update Services or Systems Management Server 2003. Organizations can use those products to fully manage deployment of updates released through Windows Update and Microsoft Update, including Internet Explorer 8, within their environment.
• If you used the Blocker Toolkit to block Internet Explorer 7 from being installed as a high-priority update, you need to use the Internet Explorer 8 version of the Blocker Toolkit to block Internet Explorer 8 from being installed. There are different registry keys used to block or unblock automatic delivery of Internet Explorer 7 and Internet Explorer 8.