Allow Microsoft Edge to block navigations to external protocols in a sandboxed iframe

Policy ID: SandboxExternalProtocolBlocked
Scope: Computer Configuration, User Configuration
Supported on: Microsoft Edge version 99, Windows 7 or later
Source: Microsoft Edge Policy Templates (version 155.0.4283.45)
Category: Microsoft Edge

Description

Microsoft Edge blocks navigations to external protocols inside a sandboxed iframe.

If you enable or don't configure this policy, Microsoft Edge blocks those navigations.

If you disable this policy, Microsoft Edge doesn't block those navigations.

This policy can be used by administrators who need more time to update their internal website affected by this new restriction. This Enterprise policy is temporary; it's intended to be removed after Microsoft Edge version 117.

Registry

ComputerHKEY_LOCAL_MACHINE

HKLM\Software\Policies\Microsoft\Edge View registry values

SandboxExternalProtocolBlockedREG_DWORD

UserHKEY_CURRENT_USER

HKCU\Software\Policies\Microsoft\Edge View registry values

SandboxExternalProtocolBlockedREG_DWORD

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