Google Cast must be disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-235743	EDGE-00-000026	SV-235743r960963_rule		Medium

Description

Enable this policy to enable Google Cast. Users will be able to launch it from the app menu, page context menus, media controls on Cast-enabled websites, and (if shown) the Cast toolbar icon. Disable this policy to disable Google Cast. By default, Google Cast is enabled.

STIG	Date
Microsoft Edge Security Technical Implementation Guide	2025-05-15

Details

Check Text (C-38962r626425_chk)

The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Cast/Enable Google Cast" must be set to "disabled".

Use the Windows Registry Editor to navigate to the following key:
HKLM\SOFTWARE\Policies\Microsoft\Edge

If the value for "EnableMediaRouter" is not set to "REG_DWORD = 0", this is a finding.

Fix Text (F-38925r626426_fix)

Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Cast/Enable Google Cast" to "disabled".