Apologies for the delay in a reply here! Are you still having this issue? If so, what version of Zoom are you on? Please first try updating to your Zoom to the latest version and let us know if you are then still seeing this issue.
Hey @ali3, adding to @alexisbrown's reply after checking your version of Zoom to ensure it's up-to-date. This error code means that you are having Connectivity issues with Zoom's servers.
If you are on a network with a firewall or a proxy, contact a network administrator to check your firewall and proxy settings.
Antivirus software like AVG may be blocking your connection to Zoom. Disable the service and try again.
Finally, check with your Internet service provider that you can connect to the Zoom service.