You could try a clean removal/uninstall of Zoom Application and then reinstall it again. This is to ensure that any corrupted files/config on the application is all completely removed before reinstalling.
If you have a Mac - try uninstalling Zoom by using their uninstall file instead of putting the Application in the trash. You can do this by going to Applications -> right clicking on zoom.us -> Show package contents -> open Contents -> open Frameworks -> use the ZoomUninstaller file.
After this, try to reinstall Zoom again.
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I have tried this and also contacted the person I was in Zoom with recently but it is not working, not getting any other message than: you are in meeting, close this meeting and when I click this I am not able to launch a new meeting.
It is frustating, I am paying zoom for the meeting functionality, but I don't get any solution