Zoom suddenly stopped working

[Peter10Point7]

 My Mac OS will not upgrade beyond 10.15.7 because my desktop is a 2013 model. The new Zoom program seems to need a newer OS. How can I use Zoom now?

[RN]

Hey @Peter10Point7 welcome to the community! Believe it's the structuring of that join URL after seeing "zoommtg://", can you please tell me how you are schedulig and copy/sending Zoom Meeting invitations? 

Inviting others to join a meeting and Joining a Zoom meeting has more information on joining and inviting participants to Zoom meetings. For example, a link like "https://zoom.us/j/[meetingID]" which when you put into your browser will redirect you to open your Zoom Desktop Client and prompt'd to enter the Meeting Passcode. 

[Peter10Point7]

Hello,

I do not schedule Zoom meetings. I only join Zoom meetings that other people have set up.

Peter