The Microsoft Edge Chromium is so good that you may not need to keep Classic Edge in your computer. But in case you need to keep both versions, here is a tip from https://geekermag.com/use-microsoft-edge-chromium-classic-edge-side-by-side/
Modify Window Registry using RegEdit to set this key to 1: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\EdgeUpdate
Make key EdgeUpdate if it does not exist.
Further reading:
- How to Enable running Microsoft Edge (Edge HTML) and Microsoft Edge (Chromium-based) side-by-side in Windows 10 https://www.tenforums.com/tutorials/144061-enable-microsoft-edge-side-side-browser-experience-windows-10-a.html
- Microsoft Edge - Update policies https://docs.microsoft.com/en-us/deployedge/microsoft-edge-update-policies#allowsxs
