Hi, I'm Kareem. I have experience in programming applications using C#, UWP, and WPF. I created a demo WPF (.Net Core) app just now which uses NotifyIcon of Windows Forms namespace. The app is successfully minimizing to the system tray. I used a simple icon for which I placed two menu items on it for open and exit the app. I created the app only with WPF (.Net Core) and Windows Forms namespaces, without using any other third party libraries. Ping me if you want to test the app or for the screenshots of it. Thank you.