Microsoft provided the Browser Choice update in accordance with a decision issued by the European Commission in December 2009. The obligations imposed by that decision have expired and as a result the Browser Choice Update will no longer be delivered to new users. For more information about the Browser Choice update, see the following Microsoft Knowledge Base article:
The following information is provided to help system administrators manage the display of the Browser Choice update screen in managed personal computing environments that are under a Volume Licensing program.
1 Display the Browser Choice update (default)
0 Do not display the Browser Choice update
NOTE: For Windows XP 64-bit machines, the registry key is located at HKEY_LOCAL_MACHINE\Software\Wow6432Node\BrowserChoice