ERR_NGROK_5211: The OIDC provider returned the error code "ERROR" with the additional details: "DETAILS" - ngrok documentation

What does ERR_NGROK_5211 mean?

ngrok returns ERR_NGROK_5211 with this message:

The OIDC provider returned the error code "<ERROR>" with the additional details: "<DETAILS>". Try authenticating again.

Troubleshoot ERR_NGROK_5211 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_5211?

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