Microsoft has adopted the Chromium open source project in the development of Microsoft Edge on the desktop to create better web compatibility. This new Microsoft Edge runs on the same Chromium web engine as the Google Chrome browser, offering you best in class web compatibility and performance.
The new Chromium based Microsoft Edge is supported on all versions of Windows 7, Windows 8.1, Windows 10, Windows Server (2016 and above), Windows Server (2008 R2 to 2012 R2), and macOS.
You can use Microsoft Edge in Windows 10 to cast video, picture, and audio content from your browser to any Miracast and DLNA enabled devices on your network.
See also: Cast a Chrome tab on your TV | Chromecast Help
This tutorial will show you how to cast video, picture, and audio media content from the Chromium based Microsoft Edge in Windows 10 to any Miracast and DLNA enabled device on your network.
Open Microsoft Edge, and go to a website that contains the media (ex: video, picture, audio) you want to cast.
Click/tap on the Settings and more 3 dots button (Alt+F), click/tap on More tools, and click/tap on Cast media to device. (see screenshot below)
If prompted "An extension from Google is needed to support Chromecast and DIAL devices. Please restart the browser to install.", click/tap on Restart. (see screenshot below)
Click/tap on the Miracast or DLNA device you want to cast to. (see screenshot below)
The media should now start casting to the selected device.
The selected device may prompt you to approve casting to it first.
When you are ready to stop casting to this device, follow the steps below: (see screenshot below)
A) Click/tap on the Cast icon on the toolbar.
B) Click/tap on Stop casting for the device you are currently casting to.