If you receive the above error message while your watching a YouTube video within Microsoft Internet Explorer, please try the following –
1. Plug speakers or headphones into the computer, then restart IE and navigate back to the YouTube video
2. Go to https://youtube.com/html5 and click Request the HTML5 Player button. then navigate back to your video.
3. Play the video in the Google Chrome browser.
4. Report to the IT Helpdesk.