--- title: Installation Notes --- ## Sonarr (v3) The current stable version of Sonarr is v3. When configuring Sonarr v3, the default authentication method is `In-App Setting`. The available authentication methods for Sonarr v3 are as follows: - **In-App Setting**: Allows users to make changes via the web GUI (Graphical User Interface). - **None**: No authentication required. - **Basic**: Basic username and password authentication. - **Forms**: Form-based authentication. For Sonarr v3, we strongly recommend using either "In-App Setting" or "None" for the authentication method. :::caution We strongly discourage the use of the "Basic" authentication method, as it may potentially impact system probes and security. :::