# How to: Fix "Service Unavailable"

1. If you're using the **local model**, check the local models finished
   downloading — **Settings → General → Setup assistant → Open** shows what's
   missing.
2. If you're using **Ollama**, check it's running — **Settings → LLM →
   Ollama** shows its status, and **Start Ollama** starts it.
3. Restart the application.
4. Check your firewall isn't blocking local connections.

See [Troubleshooting](https://exaflux.io/docs/axon/troubleshooting).