Salesforce supports the latest stable version of the Chromium version of Microsoft Edge for Salesforce Classic and Lightning Experience. Salesforce supports Microsoft Edge Chromium only on Windows. Internet Explorer Compatibility Mode in Microsoft Edge isn’t supported.
Important Support for the non-Chromium version of Microsoft Edge in Lightning
Experience and Salesforce Classic ended on December 31, 2020.
How do I know which version of Edge I have?
The Microsoft Edge Chromium browser uses the 
icon, while non-Chromium Edge uses the 
icon.
Considerations for Microsoft Edge (Non-Chromium)
The developer console doesn’t support Microsoft Edge.