Why are these lessons not in video with audio?

The lessons being viewed are likely provided only as text-based content, not as recorded video or audio. In that case, there is no audio track to play in Microsoft Edge or Windows 11, so no sound or video controls will appear.

If the goal is to have the text read aloud, Immersive Reader or similar reading tools can be used where available. For example, in OneNote’s Immersive Reader, text can be read aloud with highlighting; if highlighting appears but no sound is heard, volume and output device settings in Windows should be checked:

1. Increase the device or speaker volume and ensure it is not muted.
2. In Windows, open the Sound Control Panel from the taskbar and confirm that at least one playback device (speakers or headphones) is enabled (green checkmark).
3. Make sure the correct output device is selected in Sound settings.

If the site or course platform does not offer video or audio versions of the lessons, only the publisher or course provider can add those formats.

References:

• Nothing happens when I press play in Immersive Reader for OneNote