Opening the program gives you a couple of options.
All that's required is to run the application and access it from the system tray. With Defender Control, you can easily and quickly completely disable Windows Defender with a click. Microsoft stopped allowing you to disable or uninstall Windows Defender quite a while back and thus it can cause some issues with other software in certain circumstances. App provides for an easy and quick way to disable the anti-malware service that comes pre-installed with Windows with zero fuss.