Turn off cross-document messaging

This policy setting allows you to manage whether documents can request data across third-party domains embedded in the page.If you enable this policy setting documents cannot request data across third-party domains embedded in the page.If you disable or do not configure this policy setting documents can request data across third-party domains embedded in the page.

Policy path: 

Windows Components\Internet Explorer\Security Features\AJAX

Scope: 

User

Supported on: 

At least Internet Explorer 8.0

Registry settings: 

HKCU\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_CROSS_DOCUMENT_MESSAGING!iexplore.exe

Filename: 

inetres.admx

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