If you want to join from your browser without downloading Zoom, the host must have Show a “Join from your browser” link enabled.The host of the meeting must have Only authenticated users can join meetings from Web client disabled.The host of the meeting must have Authentication profiles disabled, or authentication exceptions are set up to allow guests to join.Each meeting has a unique 9, 10, or 11-digit number called a meeting ID that will be required to join a Zoom meeting.Prerequisites for joining a Zoom video call as a guest Note: If the host of the meeting has restricted who can join by setting up authentication profiles, then all participants must be signed in to a Zoom account to access the meeting. Learn more about common questions and problems users come across when using Zoom for the first time.

However, a Zoom account allows you to create and host your own meetings, invite others to join your meetings, and update personal settings to get the most out of your Zoom virtual meeting experience If someone invites you to their meeting, you can join without creating or signing in to an account.

You do not need a Zoom account to join meetings as a participant.

Zoom meeting free account limitations