VoiceThread has transitioned from Flash to HTML5. Since Safari is not HTML5 compliant, VoiceThread will no longer work properly when using this browser. If you try to open VoiceThread while using Safari, it will give you a black screen. In Internet Explorer and Edge, you can still view the VoiceThread – you just can’t add a video or voice comment, and if you try to, you will get a dialogue telling you to use Chrome or Firefox for that function.
YouSeeU (virtual classrooms) also runs on HTLM5. As with VoiceThread, Chrome is the recommended browser. You may use Firefox but you will not be able to share your screen. This feature only works in Chrome and requires an extension to work: https://bit.ly/YouSeeU-Extension. You only need to install this extension once.