Internet Explorer 11 Will No Longer Work With Teams After November 30
Microsoft 365 apps and services will be focusing their efforts on modern browser support over the coming year. As a result, the Microsoft Teams web app will no longer support Internet Explorer 11 (IE 11) after November 30, 2020. After November 30, 2020, users will be unable to access the Teams web app from IE 11 and be notified to use the desktop app or access the web app from Microsoft Edge.
Please note that the IE 11 changes are specific to the Teams web app. IE 11 remains a supported browser as a component of the Windows operating system and will follow the Lifecycle Policy for the product on which it is installed.