If you are receiving error code 5003, this means that an issue is preventing a connection between your device and Zoom’s servers.
How to fix it
To solve this issue, perform any of the following solutions:
Reinstall Zoom
- Uninstall Zoom.
- Download and install the latest version of Zoom.
Check your network firewall and proxy settings
- Contact a network administrator to check your firewall and proxy settings.
- Disable any antivirus software that might be interfering with your connection.
- Check with your internet service provider if you can connect to the Zoom service.