# Reauthentication

> A flow that asks the user for new credentials when a config entry can no longer log in, without setting it up again.

Source: https://contributors.home-assistant.io/glossary/reauthentication/

- In code: `async_step_reauth`, `ConfigEntryAuthFailed`
- Also: reauth

When a password changes or a token expires, the integration raises `ConfigEntryAuthFailed`. Home Assistant then asks the user to log in again, and keeps everything else of the config entry as it is.

## Related terms

- [Config flow](https://contributors.home-assistant.io/glossary/config-flow/): The steps in the UI that set up an integration and create a config entry.
- [Config entry](https://contributors.home-assistant.io/glossary/config-entry/): One set-up instance of an integration, like one Hue bridge, with the configuration Home Assistant stores for it.