Firefox v.23 - Mixed Content Blocker Enabled
In Firefox v.23, when visiting an HTTPS page with Mixed Active Content such as an embedded or linked video in D2L, a "Media cannot be displayed" message will appear.
This is due to Mozilla enabling the Mixed Content Blocker in version 23.
- To unblock mixed content on a specific page, click on the sheild icon, located in the location bar.
- Expand the "Keep Blocking" drop down menu and select Disable Protection on This Page.
Click here for more information about Active and Passive Mixed Content.