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.
Turn off cross-document messaging
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HKEY_LOCAL_MACHINE -> Software -> Policies -> Microsoft -> Internet Explorer -> Main -> FeatureControl -> FEATURE_CROSS_DOCUMENT_MESSAGING # iexplore. exe
Windows Components -> Internet Explorer -> Security Features -> AJAX