This setting lets you decide whether to turn on Pop-up Blocker and whether to allow pop-ups to appear in secondary windows. Turning this setting on, or not configuring it, turns on the Pop-up Blocker, which stops pop-ups from appearing. Turning this setting off turns off Pop-up Blocker and lets pop-ups appear. Counter Measure: Configure this setting depending on your organizations requirements. Potential Impact: Users will not receive pop-ups and prevent users from running certain web apps. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Microsoft Edge\Turn off Pop-up Blocker (2) REG: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Main!AllowPopups