Please find “Setting and More ” on Microsoft Edge, and then select Settings. Please select the “Default Browser” at the left side list. 

After that please select “Allow sites to be reloaded in Internet Explorer mode(IE mode)”. Microsoft Edge will be restarted. After it is ready, you can add Site-Server’s IP address to Internet Explorer mode pages. However, according to Edge’s regulations you need to add that page manually after 30 days every time.