ERR_NGROK_4200: You may not delete all or your logins, you must have at least one

What does ERR_NGROK_4200 mean?

ngrok returns ERR_NGROK_4200 with this message:

You may not delete all or your logins, you must have at least one.

Troubleshoot ERR_NGROK_4200 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

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