ERR_NGROK_106: The authtoken you specified is an ngrok v1 authtoken, but you're using ngrok v2 - ngrok documentation

What does ERR_NGROK_106 mean?

ngrok returns ERR_NGROK_106 with this message:

The authtoken you specified is an ngrok v1 authtoken, but you're using ngrok v2.
Instructions to install your authtoken are on your ngrok dashboard:
https://dashboard.ngrok.com/get-started/your-authtoken

Troubleshoot ERR_NGROK_106 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_106?

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