This policy setting determines whether Internet Explorer MIME sniffing will prevent promotion of a file of one type to a more dangerous file type.If you enable this policy setting the Mime Sniffing Safety Feature is enabled for all processes.If you disable or do not configure this policy setting the Mime Sniffing Safety Feature is disabled for all processes.
Policy path:
Windows Components\Internet Explorer\Security Features\Mime Sniffing Safety Feature
Scope:
User
Supported on:
At least Internet Explorer 6.0 in Windows XP with Service Pack 2 or Windows Server 2003 with Service Pack 1
Registry settings:
HKCU\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MIME_SNIFFING!*
Filename:
inetres.admx