Zoom option greyed out: "Enter full screen when a participant shares screen"

I was expecting that this would be a corporate managed policy option, so I raised a ticket with IT at my workplace. They couldn't find anything in the organization-wide settings.

They recommended updating Zoom to the latest version. So I updated to Zoom 5.1.0 for macOS.

I updated with the version downloaded from the Zoom website, rather than the pre-installed version of Zoom available from the corporate self service intranet. Not sure if that matters.

I wasn't expecting this to work. But it did! After updating, the option for "Enter full screen when a participant shares screen" is no longer greyed out.

I'm not sure if it was a bug with the particular previous version, or some ongoing issue caused by version mismatch in the organization and/or using an outdated version of the app. I'll keep an eye out for if the disabled option returns.

These options are controlled by keys in the us.zoom.config.plist file:

/Library/Preferences/us.zoom.config.plist

Specifically the keys:

<key>ZAutoFullScreenWhenViewShare</key>
<true/>
<key>ZAutoFitWhenViewShare</key>
<true/>

This plist is controlled by the IT Admin and automatically installed during Self Service deployments to company machines, as described here:

https://support.zoom.us/hc/en-us/articles/115001799006-Mass-Deployment-with-Preconfigured-Settings-for-Mac

If you reinstall Zoom via their website, your company's plist will not be installed and these options will not be grayed out.

Or, modify the us.zoom.config.plist file yourself. Remove the keys, then restart Zoom. So long as you have admin access to save the plist file in this location, the Zoom app should launch with those options available in the Preferences UI.

This plist may be overwritten on each app update, so you may need to make the change again.