How to change WebBrowser from IE to Firefox

I am working on a C# .NET application with System.Windows.Forms.WebBrowser.

IE is not responding properly, so i want to change to Mozilla Firefox.

How can I do this?

Why can't I make Firefox my Default browser?

Open the PC Settings application (press and release the Windows Start button, then click the gear icon). Select Search and apps from the sidebar. Select Defaults from the sidebar. In the Set Default Programs window, select Firefox from the list of programs on the left and click Set this program as default.

Will Windows 11 allow Firefox as Default browser?

On Windows 11, Microsoft Edge is the default browser experience to navigate the internet, open web links, and view PDF files. However, you can change it and make the system default to Google Chrome, Mozilla Firefox, Brave, Opera, or other browsers.

You can't.

The WebBrowser control is a wrapper around the IE ActiveX control, and cannot easily be swapped for Mozilla.

However, you can look into the Mozilla ActiveX Control