This wikiHow teaches you how to turn off Microsoft Defender (formerly Windows Defender), both temporarily and permanently , in Windows 10. While Microsoft Defender can be disabled until you restart your computer from within Settings, you can prevent Microsoft Defender from turning itself back on until you allow it to from within the Windows Registry Editor. Select the Start button Settings Update & Security Windows Security and then Firewall & network protection. Open Windows Security settings; Select a network profile. Under Microsoft Defender Firewall, switch the setting to On.If your device is connected to a network, network policy settings might prevent you from completing these steps. How to Disable Windows Defender April 17, 2020 / James Masterson Turning off Windows Defender Antivirus protection is not recommended because it leaves your computer vulnerable to attacks. How to disable Windows Defender Antivirus using Group Policy. On Windows 10 Pro, you can configure a policy using the Local Group Policy Editor to disable Windows Defender Antivirus permanently. How to Disable Windows Defender in Windows 10. Starting with the Windows 10 Anniversary Update in the Summer of 2016, Windows Defender can actually run alongside another antivirus app. When you install another app, Windows Defender itself isn’t disabled—just its real-time protection component is. Follow these steps to temporarily turn off antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats. A guide on how to disable Windows Defender for a successful install of KMSpico. admin 14 March 2020. 8,702. When trying to install KMS activators such as KMSpico & Microsoft Toolkit, you may receive warnings from Windows Defender (or even your antivirus software) informing you that the download is infected with. How to disable Windows Defender Antivirus using Registry. The Local Group Policy Editor is not available on Windows 10 Home, but you can still achieve the same results changing the Registry settings.