To help prevent users from installing Internet Explorer 9 RTW (Release-To-Web) through Windows Automatic Update, Microsoft has released the IE9 Blocker Toolkit and is ready to download from the Download Center. This Blocker Toolkit prevents IE9 RTW offered as an important update via Automatic Update.



Please note that the IE9 Blocker Toolkit has no impact on the IE9 RC AU deployment to IE9 Beta customers and, further, will not block the final version of IE9 offered to users who already have pre-released versions of IE9 installed on their machine. The toolkit, also, does not prevent users from manually installing IE9 from the Microsoft Download Center.

https://www.microsoft.com/downloads/e...d-01776bf2bea4