Turn off cross-document messaging
- Policy ID
- IESF_DisableXDM
- Scope
- Computer Configuration, User Configuration
- Supported on
- At least Internet Explorer 8.0
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- Windows Components › Internet Explorer › Security Features › AJAX
Description
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.
Registry
ComputerHKEY_LOCAL_MACHINE
HKLM\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_CROSS_DOCUMENT_MESSAGING View registry values
- iexplore.exeREG_DWORD
UserHKEY_CURRENT_USER
HKCU\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_CROSS_DOCUMENT_MESSAGING View registry values
- iexplore.exeREG_DWORD