To share your Mac screen during an online meeting, use the meeting app’s sharing control and allow the required macOS screen access. Choose the window or display you want attendees to see. Connecting a Mac to a television is a different task from presenting in a meeting.
Start with your meeting app
Open the presentation, join the call and find its Share or Share Screen control. The label differs between Teams, Zoom, Webex and other services. Select the relevant window or display, then confirm the preview before you start speaking.
Allow the right app in macOS
On current macOS versions, open the Apple menu, select System Settings → Privacy & Security → Screen & System Audio Recording. Allow the meeting application you are using. If the meeting runs in a browser, check the browser’s permission instead. Older versions may use a different settings label.
Return to the app and follow any prompt to apply the change. You may need to reopen it. Test beforehand so a permission prompt does not interrupt a client presentation.
Choose what attendees can see
A single window is useful for a document or demonstration within one application. A full display is useful when moving between several tools. If you have an external monitor, check its contents before selecting it. Presenter notes should stay outside the audience’s shared view.
Treat audio as a separate check
A visible video does not guarantee that attendees can hear it. Check your meeting app’s instructions for sharing computer sound and test a short clip. Avoid assuming that turning up the Mac’s speakers will provide clear audio to everyone else.
If the screen appears blank
Check the selected window, app permission and any browser sharing prompt. Ask whether the organiser has enabled presenting for your role. Keep a copy of the key slides or a document link available so the discussion can continue while you resolve the sharing problem.
Finish by stopping the share and confirming that your desktop is no longer visible.