Legacy Edge (the first version of the Edge Browser) and Internet Explorer 11 will no longer be able to access any Microsoft online services on August 17th of this year. Microsoft has installed tools to redirect users to the new Edge Browser.
On March 9th 2021, Legacy Edge will stop receiving security updates. Some banks and websites are still requiring Internet explorer for compatibility with their sites.
Everyone should be using a modern browser, such as the new Edge, Chrome, or Firefox. If you access websites that claim to require Internet Explorer, those websites will need to be updated very soon for compatibility with modern browsers.