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If it is already installed, update it by clicking on the user icon tin in the top right corner and choose Check for Updates. After this is complete, restart the computer to make sure that all Zoom sessions are refreshed.
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Once the above steps are complete, you can join multiple meetings by clicking on the join URL or navigating to https://zoom.us/join and entering the meeting ID. The Join button in the Zoom client will only work for the first meeting that you join.
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