I am not able to join a meeting or webinar. How can I fix it?

I am not able to join a meeting or webinar. How can I fix it?

If you are unable to join or start a meeting or webinar, it could be because you are unable to establish a connection with our servers. You can take the following steps to resolve this issue.
  • Add *.zohomeeting.com domain to the exception list on your firewall configuration as it automatically resolves all the IP addresses of Zoho Meeting.
  • We use outgoing port 443 to make Websocket/TCP connection to our servers. If you have a proxy that blocks the port (or) Websocket (or) TCP protocol, please make the necessary changes to allow the same.
  • Sometimes Internet Service Providers (ISPs) fail to resolve the domain name. Please contact your ISP if connection is not established even after changing firewall and proxy settings.
  • If you are still experiencing issues after following the above steps, try switching to a different network if possible.
Network Firewall or Proxy Server Settings
 Ports to open
Domains to be whitelisted
Open TCP port 443
Highly recommended
Open UDP port range 16384 – 32768

Open UDP Port 3478

  1. If you are using a VPN, please disconnect it if it is not required for your meeting. 
  2. We recommend using wired network connection for better performance. 
  3. You can view other prerequisites on our system requirements page.                                                     

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