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.
This policy will be obsoleted in Microsoft Edge version 95.
| Registry Hive | HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER |
| Registry Path | Software\Policies\Microsoft\Edge |
| Value Name | TargetBlankImpliesNoOpener |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |