In January, Microsoft will replace the classic Edge with the Chromium-powered Edge browser. The migration happens during a Windows Update and the new Edge hides the old Edge. Microsoft says the update will only hide the browser on Windows 10 and the classic version of the browser won’t be removed, at least for now. The workaround requires Group Policy Editor and it apparently works only for Windows 10 Pro and Enterprise. Users with Windows 10 Home can’t restore the classic browser because the workaround requires the group Policy Editor, which isn t available on the Home.
Source: https://www.bleepingcomputer.com/news/microsoft/how-to-run-classic-and-chromium-microsoft-edge-side-by-side/