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.

Supported on: At least Internet Explorer 8.0
Registry HiveHKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
Registry PathSoftware\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_CROSS_DOCUMENT_MESSAGING
Value Nameiexplore.exe
Value TypeREG_DWORD
Enabled Value0
Disabled Value1

inetres.admx

Administrative Templates (Computers)

Administrative Templates (Users)