ERR_NGROK_1500: Maintenance in progress, operations for some resources are read-only

What does ERR_NGROK_1500 mean?

ngrok returns ERR_NGROK_1500 with this message:

Maintenance in progress, operations for some resources are read-only

Troubleshoot ERR_NGROK_1500 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.