Please note that Blackboard will be performing maintenance that affects Collaborate Ultra on Sunday June 4, 2017 at 12:00AM EST.
The maintenance is planned from 12AM to 4AM EST on Sunday. You may see intermittent availability of Ultra during the maintenance window.
You can check the status of Collaborate here:
You can access the Collaborate Support Portal here: https://blackboard.secure.force.com/btbb_publichome?dfprod=Collaborate