Found this:

(Internet) Explorer is dead: what this means for users
At this point, many users have likely shifted away from Internet Explorer. The news that Internet Explorer would be retiring on June 15, 2022, was reported over a year ago. For many people that signaled that it was time to move on.

But for those who were not ready to leave, or simply did not want to stop using the familiar browser, starting at midnight they will not have a choice. At that point, any attempt to open the Internet Explorer desktop app will automatically redirect you to Microsoft Edge.