> ## Documentation Index
> Fetch the complete documentation index at: https://ngrok.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Error 3003

## ERR\_NGROK\_3003

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](https://ngrok.com/docs/cloud-edge/edges/tls#compatible-clients)

## Further help

If you're having trouble resolving this error, please reach out to [support@ngrok.com](mailto:support@ngrok.com?subject=Help%20with%20ERR_NGROK_3003)