Known Issue articles explain a problem, or issue, and provide a workaround, if available.
Current known issues that may effect your Blackboard classes:
Adobe Presenter: lectures created in older versions of Adobe Presenter (7 or 8) are not loading or playing audio. You may need to clear your internet browser history and refresh the browser several times to view the lecture.
Chrome browser no longer supports Silverlight, Java and Unity plugins. This means Blackboard Voice tools (board, collaborate, thread) and some video files (Quicktime, Windows Media) will only work in Firefox or Safari.
YouTube Mashup video embed: videos do not display after using the Mashup tool. Provide the YouTube video link in your courses until the mashup tool is repaired.