ERR_NGROK_3127: PROVIDER rejected authorization due to invalid or expired credentials

What does ERR_NGROK_3127 mean?

ngrok returns ERR_NGROK_3127 with this message:

<PROVIDER> rejected authorization due to invalid or expired credentials.

If this error persists after reauthorizing, contact the owner of the application to ensure you have permission.

Troubleshoot ERR_NGROK_3127 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_3127?

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