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The Meeting Option: Only Authenticated users can join, will require participants to sign in first before they can join your Zoom session.

It helps protect your meeting from intruders, as recommended by the NUS IT Advisories.

In NUS, the recommendation is to select NUS Zoom Sign In required to Join.

Options available for "Only Authenticated users can join"

  • "Sign in with NUS Zoom account at"
    NUS Staff and students to sign in via SSO to their Zoom Accounts with NUS email address before they can join the session.
    Click Edit to add other domains.

  • "Sign in with any Zoom account"
    Participants will have to sign in with any Zoom Account before they can join the session. Users without Zoom accounts can sign up for a free Zoom account.

  • Add Authentication Exceptions NEW
    Invite guest lecturers or external participants to bypass and join an Authenticated session. You will need to add full name and email address.

What if I have external non-NUS participants?

You can add Authentication Exception using their email address.

Pre-requisites: Only for Generate Automatically meeting ID., not Personal Meeting ID.

  1. Go to
  2. Click on the Meeting Topic.
  3. Click on "Edit this Meeting" button.
    Note: You cannot edit this meeting if the meeting has started. You will need to End this meeting first, before you can edit.
  4. Under Require authentication to join, click Add Authentication Exception.
    Add Full Name and Email Address.
    Add Participants if there are more guests.
    Click Save to save the Authentication Exception addition.

  5. Verify the Meeting options again.
  6. Click Save to save the meeting settings.

Additional Guides:
How to Sign In to my NUS Zoom Account?
Pre-assign Breakout Room
Add authentication exceptions