Resolved – Issues uploading files to Collaborate
Update: Blackboard have now reported that this issue is resolved – 2/2/21, 15:47 GMT
Blackboard has confirmed that there are currently issues uploading files (Powerpoint, PDF, etc.) to Collaborate sessions. They are currently working to resolve this issue as reported in their status update page.
In the meantime, they suggest sharing your screen rather than uploading the documents.