Wednesday, December 22, 2021, 7:24 am EST, (GMT-5) A small subset of Collaborate Ultra users may have temporarily experienced an A00 error when joining sessions on a single session server (ultra-us-prod-saturn-i-09f7b6e8fbbb317e3). Any users that are still experiencing issues should refresh their browser to reconnect to the session. For more information visit: https://blackboard.secure.force.com/publickbarticleview?id=kA71O000000kCYb