It is important that you use only recommended browsers in Learn 9.
The following link contains the latest information on supported web browsers and operating systems: Supported Browsers.
"Certified" is the highest ranking given by Blackboard and browsers with this designation will encounter the fewest problems. For PCs, Internet Explorer and Firefox are "Certified" Learn 9 browsers. For Macs, Firefox and Safari are "Certified" Learn 9 browsers.
Don't know what browser you have? Use this browser check to have a report returned of the status of all settings required to work within Learn 9: Browser and Settings Check