ERR_NGROK_3003: This client does not support TLS SNI, but the endpoint's TLS configuration requires SNI - ngrok documentation

What does ERR_NGROK_3003 mean?

ngrok returns ERR_NGROK_3003 with this message:

This client does not support TLS SNI, but the endpoint's TLS configuration requires SNI. See https://ngrok.com/docs/cloud-edge/edges/tls#compatible-clients

Troubleshoot ERR_NGROK_3003 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

Where can I get more help with ERR_NGROK_3003?

Email support@ngrok.com and include the error code.