Problem
A video shows an "Error loading player -- no playable sources found" error.
Cause
The browser doesn't support HTML5 video, or a required plug-in is missing or outdated.
Fix
For learners
Try opening the course in a different supported browser. See What are the minimum browser requirements for Atlas?
If that doesn't help — especially on a work device — ask your IT team or training administrator for help.
For administrators
Work with your IT team to update browser plug-ins or provide a supported, up-to-date browser for affected learners.