Captivate HTML5 output with video won’t play with IE11

I have a HTML5 course output with slides and video from Captivate 9 and 2017 that when played with IE11, it stalls with a permanent IE11  “loading” screen.  If published as .swf the project plays and navigates perfectly, but with EOL that is not an option any more. The video in the course continues to play, but the captivate course slides container and contents don’t work. Looking through old threads, this seems to have been reported but none of the […]