I have a new-to-me Lenovo Thinkpad with Windows 11. I searched for Zoom and it said I had the app but when I clicked on it it was no longer supported (a Chrome plugin, perhaps?) I downloaded Zoom Meeting and installed that, signed on, and started a meeting with just me. Ran the audio and mic tests and they worked without having to mess with any security settings. I did find the security setting WLJ mentioned to give permission for the microphone but it was already enabled.