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Microsoft Teams not opening problem after macOS login

Steven Doig 0 Reputation points
2026-03-26T08:37:13.1166667+00:00

I've added Microsoft Teams to the macOS 'Login items' list.

After login, the program is visible if I CMD + Tab, to Teams, it doesn't open with any visible window or content. They're just 'empty shells'.

If I close them and reopen Teams, it displays properly.

How do I ensure Teams opens and displays properly on first login?

Microsoft Teams | Microsoft Teams Free | Other
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  1. Arlene D 36,020 Reputation points Independent Advisor
    2026-03-26T12:42:33.98+00:00

    Oh, I see. Since both auto-start options are on, Teams likely opens before macOS finishes loading, causing the blank window.

    I would suggest removing Teams from Login Items in System Settings, then re-adding it via Teams’ auto-start option, making sure macOS and Teams are updated, and restarting your Mac.

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  2. Arlene D 36,020 Reputation points Independent Advisor
    2026-03-26T11:16:50+00:00

    You can check that both macOS and Teams are fully updated.

    Also, these:

    • Remove Teams from Login Items in System Settings > Users & Groups.

    • Re-add it using Teams > Preferences > General > check “Auto-start application.”

    • Restart your Mac so Teams launches after system services load.

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