From Panopto email notification:
"Panopto is officially going to drop support for Internet Explorer 11 effective June 26th 2021.
At the end of June 2020, we put Internet Explorer 11 in maintenance mode, under which Panopto would provide critical fixes as needed. As a final step, effective June 26th, Internet Explorer 11 (IE11) will no longer be supported by Panopto. This means we will no longer fix any issues users experience while using Panopto on IE11. This is necessary to allow Panopto to continue innovating on newer browser technology and prevent our users from having a severely degraded experience.
Please note, starting May 5th, users on IE 11 will see a message in the Panopto viewer, letting them know that they should plan to upgrade to a modern browser before June 26th.
Why are we making this decision?
Panopto is committed to providing our customers with a video experience that inspires knowledge sharing and learning. Unfortunately, continuing to support legacy technologies like IE 11 can hinder innovation. For IE 11 support, we have elected to follow Microsoft’s lead. Many Microsoft products such as Microsoft Teams have already dropped IE 11 support and M365 support for IE11 will end in August. Today, IE11 is used by only a small number of Panopto users and those users have a degraded experience in terms of performance, accessibility, and security. We recommend Google Chrome, Apple Safari, Mozilla Firefox, or Microsoft Edge for optimal user experience.
How can you prepare?
Panopto recommends IE11 users upgrade to Microsoft Edge (or another modern browser). For your other critical line-of-business apps that require IE 11, Microsoft’s recommendation is to use the Internet Explorer mode supported by Microsoft Edge. Please note, using Internet Explorer mode in the new Microsoft Edge will not help to extend IE 11 access to Panopto services beyond the dates listed above."