Do not set window.opener for links targeting _blank (obsolete)

Supported on: Microsoft Edge version 88-102, Windows 7 or later

Registry

HKLM Software\Policies\Microsoft\Edge

HKCU Software\Policies\Microsoft\Edge

Value name: TargetBlankImpliesNoOpener

Enabled: TargetBlankImpliesNoOpener = 1

Disabled: TargetBlankImpliesNoOpener = 0

Description

OBSOLETE: This policy is obsolete and doesn't work after Microsoft Edge 102. If you enable this policy or leave it unset, the window.opener property is set to null unless the anchor specifies rel="opener". If you disable this policy, popups that target _blank are permitted to access (via JavaScript) the page that requested to open the popup.