Check out the 10 best HTML5 audio player plugins for WordPress and see how they. Format using standard W3C HTML5 to work in Firefox on. HTML5 Video and Interoperability: Firefox Add-On Provides. The problem is that the HTML5 only supports basic encryption which is not allowed by my employer so as soon as I connect, it logs me back off. After the update to FF 52.0 this weekend, it now only opens in HTML5 and I can't find a way to force it back to the receiver. Previously my Firefox browser was 51.0.x and when connecting to my Citrix Win7 desktop, the browser would open the session in the Citrix Receiver.
