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Can't see or hear the lecture materials. How to fix this?

Go through the checklist below.

  • The first thing you’ll want to do is check if your audio or volume is muted or if you have speakers/headphones plugged in.
  • Next, check if your computer is outputting audio from other sources (ie. YouTube or music).
  • Next, check the browser you’re using.  We recommend using Google Chrome, Safari or Firefox.
  • Next, try clearing your browsing history (cache, cookies, etc.).  You can find info on how to do that here.
  • Next, if you’re at work, some IT departments block certain actions from being taken by your web browser/computer.  Try viewing the materials on your phone or home computer to see if there’s a difference.  If there is, speak with your IT department about how to resolve this.  We can work with them if necessary.