ERR_NGROK_1964: Can't delete SSH CA ID because an SSH certificate signed by it exists - ngrok documentation

What does ERR_NGROK_1964 mean?

ngrok returns ERR_NGROK_1964 with this message:

Can't delete SSH CA <ID> because an SSH certificate signed by it exists. Delete all host and user SSH certificates signed by this CA before deleting it.

Troubleshoot ERR_NGROK_1964 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_1964?

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