Policy

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
Pack Microsoft Windows
Category Windows Components / Internet Explorer / Security Features / AJAX
Policy ID 315ca8c85a93
Internal name IESF_DisableXDM

Registry

Copy registry mappings

HKLM\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_CROSS_DOCUMENT_MESSAGING\iexplore.exe (enabled) = 0
HKLM\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_CROSS_DOCUMENT_MESSAGING\iexplore.exe (disabled) = 1
HKCU\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_CROSS_DOCUMENT_MESSAGING\iexplore.exe (enabled) = 0
HKCU\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_CROSS_DOCUMENT_MESSAGING\iexplore.exe (disabled) = 1

Policy notes

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.

Related policies

Allow native XMLHTTP supportChange the maximum number of connections per host (HTTP 1.1)Maximum number of connections per server (HTTP 1.0)Set the maximum number of WebSocket connections per serverTurn off the WebSocket ObjectTurn off the XDomainRequest object