The problem I was faced with today, was to embed twitter feed into a new SharePoint landing page.
The widget rendered fine in most of the browsers except IE 8,9 & 11 (Yes, some companies are still on these 🙂 ).
I tried for couple of hours before trying IE Emulator, which allowed me to emulate the page in Edge, this resolved the problem.
Quickly I though of updating the master page by making it behave as if it was running in Edge, this was easily doable by following these steps :
1- Open SharePoint Designer and go to Master Pages
2- Make a copy of the actual master page (usually it is Oslo).
3- Rename it to something more user friendly (ex. Switch or Modern).
4- Open the new master page and locate in the head section
<meta http-equiv=”X-UA-Compatible” content=”IE=10″ />
5- Change the content to “IE=11”
6- Make the new master page default.