ERR_NGROK_6600: The account NAME has reached its team size limit and may not add additional users

What does ERR_NGROK_6600 mean?

ngrok returns ERR_NGROK_6600 with this message:

The account <NAME> has reached its team size limit and may not add additional users.
Ask the account owner to upgrade your plan: https://dashboard.ngrok.com/billing/choose-a-plan

Troubleshoot ERR_NGROK_6600 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_6600?

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