Zoom 4 or the previous versions will be unavailable since May 30th. If you use the older version, any attempt to attend a meeting after May 30 will result in a forced update and you cannot join the meeting until the update process is finished. Therefore, we recommend updating to Zoom 5 as soon as possible.
In detail, please see our “[Zoom users]: Please confirm&update Zoom 5.0!” or “Termination of an Earlier Version of Zoom App (May 30)” (Kyoto University).
28th May, 2020
Information Processing Office.