Big Sur plus Zoom = non functioning cursor

Have you run any "cleaning", "optimizing", "speed-up" or anti-virus apps on your Mac? If you have there is no reason to ever install or run any 3rd party "cleaning", "optimizing", "speed-up", anti-virus, VPN or security apps on your Mac.  This user tip describes what you need to know and do in order to protect your Mac: Effective defenses against malware and other threats - Apple Community   

Download and run Etrecheck. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC and recommended by Apple Support  to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.

Copy the report

and use the Additional Text button to include the report in your reply.

➡︎ IMPORTANT: ⬇︎ ⬇︎ ⬇︎

Before running Etrecheck assign Full Disk Access to Etrecheck in the Etrecheck's Privacy preference pane so that it can get additional information from the Console and log files for the report:

Also click and read the About info to further permit full disk access.

Then we can examine the report and see if we can determine what might be causing the problem.

Greetings 27_72!

Looks like you are having some issues with Zoom freezing up on your Mac and becoming unresponsive. We are happy to help get that app working again! Try following the steps listed here: If an app freezes or quits unexpectedly on Mac.

Have a great rest of your day!

Also make sure you have updated Zoom; they have released several bug fixes since Big Sur was launched and you aren't necessarily notified until you manually check for an update.