Problems with Zoom SSO - Redirection from browser to Zoom doesn’t work

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I figured it out - at least for my setup…

In my case, Firefox (or LibreWolf) no longer asks whether to open the Zoom app when clicking the “Launch Zoom App” button.

This is what I did:

  1. Open a new tab in Firefox and go to: about:config
  2. In the search bar, type: network.protocol-handler.expose.zoommtg
    • If the entry exists: Set it to false (right-click → Toggle or Reset). This will make Firefox prompt you the next time a zoommtg:// link is triggered.
    • If the entry does not exist, you can create it manually:
      • Right-click anywhere → New → Boolean
      • Name: network.protocol-handler.expose.zoommtg
      • Value: false

The next time you click on a Zoom SSO “Launch App” button that points to a zoommtg://... link, Firefox will ask again if you want to open the Zoom application.

That worked for me.
thx everybody

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