Today, we’re announcing that Microsoft 365 apps and services will no longer support Internet Explorer 11 (IE 11) by this time next year.
This means that after the above dates, customers will have a degraded experience or will be unable to connect to Microsoft 365 apps and services on IE 11.
- Beginning November 30, 2020, the Microsoft Teams web app will no longer support IE 11.
- Beginning August 17, 2021, the remaining Microsoft 365 apps and services will no longer support IE 11.
Source: Microsoft 365 apps say farewell to Internet Explorer 11 and Windows 10 sunsets Microsoft Edge Legacy
Via Microsoft outlines its IE, legacy Edge phase-out timetable | ZDNet
