Disable Automatic Install of Internet Explorer components
Computer Configuration\Administrative Templates\Windows Components\Internet Explorer
Prevents Internet Explorer from automatically installing components.
If you enable this policy, it prevents Internet Explorer from downloading a component when users browse to a Web site that needs that component.
If you disable this policy or do not configure it, users will be prompted to download and install a component when visiting a Web site that uses that component.
This policy is intended to help the administrator control which components the user installs.