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ServiceWorkerToControlSrcdocIframeEnabled

Allow ServiceWorker to control srcdoc iframes

Supported versions

  • On Windows and macOS since 134 or later
  • On Android since 140 or later

Description

https://github.com/w3c/ServiceWorker/issues/765 asks srcdoc iframe with the "allow-same-origin" sandbox attribute to be under ServiceWorker control.

By default (if left unset) or when set to Enabled, Microsoft Edge makes srcdoc iframes with "allow-same-origin" sandbox attributes to be under ServiceWorker control.

Setting the policy to Disabled prevents ServiceWorker control over srcdoc iframes.

This policy is temporary and planned for deprecation in 2026.

Supported features

  • Can be mandatory: Yes
  • Can be recommended: No
  • Dynamic Policy Refresh: No - Requires browser restart
  • Per Profile: Yes
  • Applies to a profile that is signed in with a Microsoft account: No

Data type

  • Boolean

Windows information and settings

Group Policy (ADMX) info

  • GP unique name: ServiceWorkerToControlSrcdocIframeEnabled
  • GP name: Allow ServiceWorker to control srcdoc iframes
  • GP path (Mandatory): Administrative Templates/Microsoft Edge
  • GP path (Recommended): N/A
  • GP ADMX file name: MSEdge.admx

Example value

Enabled

Registry settings

  • Path (Mandatory): SOFTWARE\Policies\Microsoft\Edge
  • Path (Recommended): N/A
  • Value name: ServiceWorkerToControlSrcdocIframeEnabled
  • Value type: REG_DWORD

Example registry value

0x00000001

Mac information and settings

  • Preference Key name: ServiceWorkerToControlSrcdocIframeEnabled
  • Example value:
<true/>

Android information and settings

  • Preference Key name: ServiceWorkerToControlSrcdocIframeEnabled
  • Example value:
true

See also

  • Last updated on