This setting lets you decide whether employees can use F12 Developer Tools on Microsoft Edge. Turning this setting on, or not configuring it, lets employees use F12 Developer Tools. Turning this setting off stops employees from using F12 Developer Tools. Counter Measure: Configure this setting depending on your organizations requirements. Potential Impact: Users cannot use F12 Developer Tools on Microsoft Edge. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Microsoft Edge\Turn off Developer Tools (2) REG: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\F12!AllowDeveloperTools