If you want to disable Windows Defender then this video is for you, if you are installing Bitdefender of other antivirus software, this should disable Windows Defender for you automatically. If you want to disable windows disable it manually then I will show you how. Computer Configuration / Administrative Templates / Windows Components / Windows Defender Antivirus Look for turn off windows defender antivirus Select Enabled ———————- HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender New, DWORD (32-bit) Value and name it DisableAntiSpyware Set the value from to 1