When scheduling meetings, users cannot copy and paste a list of alternative hosts into the Alternative Hosts field. App returns "No data" or "Please Enter valid email addresses" message. Error has been detected in web portal, desktop application, and Outlook add-in contexts.

Workaround: Users scheduling using the Zoom web portal need to enter alternative hosts one at a time. 

February 11, 2020: Zoom has confirmed this issue, which began with the Jan. 31, 2021 update, reports that it is scheduled to be fixed in March 2021.