A knowledge base article about Zoom / CalNet login issues for University Extension teachers provided by the UC Berkeley IT Service Hub - Knowledge Portal
As of March 2020, Zoom Licensed/Pro accounts (without add-ons) are now available for faculty, staff, and graduate student instructors due to instructional resilience coverage, free of charge.
We’ve seen a few incidents from professors at University Extension who are having trouble logging into Zoom in order to teach their classes. It turns out that the problem isn't with Zoom but with logging into CalNet. If you encounter this, please do the following: