Microsoft has announced that it will no longer support a number of deprecated web components and features in its client versions of Windows, especially related to the EdgeHTML engine and web apps in Windows 8 and 8.1.
Microsoft is no longer developing these components, as they are based on the deprecated EdgeHTML engine used in the original version of Microsoft Edge in the Windows 10 era before the transition to the Chromium-based browser.
The company advises moving to Chromium-based WebView2, and using modern web technologies and progressive web applications for support and security.
It’s important to note that Microsoft is not discontinuing support or releasing security updates for current legacy components — the exact timeline for the end of support and removal of these features has not yet been determined.
Full list and more information can be found on the official Microsoft Learn site.