ERR_NGROK_334

Message

The tunnel url is already bound to another tunnel session

Additional Information

You can only use a a tunnel URL for one tunnel session at a time. This error occurs when an ngrok tunnel with the requested URL is already online.

This error also appears if you attempt to create multiple tunnels using the same hostname.

You can view tunnel status from your dashboard: https://dashboard.ngrok.com/endpoints/status

You can also view agent session status from your dashboard: https://dashboard.ngrok.com/tunnel-agents/sessions

Possible Solutions

Stop the tunnel that is currently running in order to make your desired URL available.

Choose a different unique URL or hostname to start your tunnel.

Further help

If you're having trouble resolving this error, please reach out to support@ngrok.com.

Back to errors overview