Internet Explorer Processes

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 MIME sniffing will never promote a file of one type to a more dangerous file type.If you disable this policy setting Internet Explorer processes will allow a MIME sniff promoting a file of one type to a more dangerous file type.If you do not configure this policy setting MIME sniffing will never promote a file of one type to a more dangerous file type.

Policy path: 

Windows Components\Internet Explorer\Security Features\Mime Sniffing Safety Feature

Scope: 

Machine

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: 

HKLM\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MIME_SNIFFING!(Reserved) HKLM\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MIME_SNIFFING!explorer.exe HKLM\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MIME_SNIFFING!iexplore.exe

Filename: 

inetres.admx

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