If you enable this setting, users will not be allowed to switch between recent apps. The App Switching option in the PC settings app will be disabled as well. If you disable or do not configure this policy setting, users will be allowed to switch between recent apps. Fix: (1) GPO: User Configuration\Administrative Templates\Windows Components\Edge UI!Turn off switching between recent apps (2) REG: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\EdgeUI!TurnOffBackstack