# no\_auth\_user

Hot Reloadable

If no user name is provided when an MQTT client connects, will default this user name in the authentication phase. If specified, this will override, for MQTT clients, any `no_auth_user` value defined in the main configuration file. *Note: that this is not compatible with running the server in operator mode.*

## Types

| Type     | Description | Choices |
| -------- | ----------- | ------- |
| `string` | -           | -       |