> ## 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.

# ERR_NGROK_721

### Message

Unauthenticated sessions are rate limited to `MAX` bytes outgoing traffic per `INTERVAL`.Please sign up for a free account at [https://ngrok.com](https://ngrok.com) for a higher limit.

### 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_721)