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Why does Microsoft Edge (formerly Project Spartan) prompt to open this website in Internet Explorer?

Does anyone know what triggers MS Edge to not open a specific web page/site, but instead prompt the user to open the site in internet explorer?

The message says:

This website needs Internet Explorer

This website uses technology that will work best in Internet Explorer.

It is not possible to proceed using Project Spartan.

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Martin Arvidson Avatar asked Jun 14 '15 14:06

Martin Arvidson


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2 Answers

It is because the website is using some legacy technology. Microsoft Edge will automatically determine this and prompt the user. You'll need to figure what legacy components are there in Internet Explorer and convert those pieces to modern web standards.

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beautifulcoder Avatar answered Sep 19 '22 15:09

beautifulcoder


There is no rule set based on the content of the page to cause this prompt.

The prompt is controlled using the "Compatibility List" which is a cloud-hosted list downloaded by the MS Edge browser periodically. It is very similar to the CV list in IE.

In most cases we are working with the sites on that list to migrate to newer technologies at which time they'll be removed from the list.

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Charles Morris - MSFT Avatar answered Sep 18 '22 15:09

Charles Morris - MSFT