Microsoft Edge is the default browser in Windows 10 and it has been a major upgrade from Internet Explorer. Edge browser do lacks many features but it is certainly one of the better ones out there in terms of speed and technology.
Microsoft is planning to add extensions to the browser which will take it on par with other third-party browsers.
This website needs Internet Explorer
When trying to visit a website in Edge browser you might see a “This website needs Internet Explorer. This website uses technology that will work best in Internet Explorer” message, it’s because the website requires Internet Explorer’s propriety technologies.
If you come across this message it’s best to click the option labelled Open with Internet Explorer button to open the website in question in Internet Explorer browser. That said, in some cases, if you decide to continue opening the website in Edge by clicking Keep going in Microsoft Edge link, you might not notice any difference or find an issue.
In short, when Edge browser asks you to open a webpage in Internet Explorer, it’s a good idea to open the webpage in the recommended Internet Explorer browser. Also, if a webpage is broken in Edge browser, you can quickly open the same webpage in Internet Explorer browser by clicking More actions menu (the three dots that appear just below the close button) and then clicking Open with Internet Explorer option.
Also if you have uninstalled Internet Explorer from Windows 10, you can try opening the same page in other browsers such as Chrome or Firefox.