You deploy a Microsoft SQL Server instance on a Microsoft Azure virtual machine by using a template. You plan to deploy a PHP-based app in an Azure web app. The web app will use a database on the virt

Changing SQL Server authentication to mixed mode allows both Windows and SQL Server authentication, but it is not a direct prerequisite for enabling remote connectivity; the web app could use an existing Windows account or SQL authentication if already configured.

The `sp_configure 'remote access'` setting helps configure SQL Server to process requests from remote clients. Enabling this option ensures that the SQL Server instance is configured to accept and respond to connection attempts originating from outside its host server, which is necessary for the Azure web app to connect.

TCP port 1434 is used by the SQL Server Browser service, which helps locate named instances or instances using dynamic ports, but the primary port for direct T-SQL client connections to a default SQL Server instance is TCP 1433, not 1434.

SQL Server typically listens on TCP port 1433 for client connections. To allow the Azure web app to connect to the SQL Server database on the virtual machine, an inbound rule must be enabled on the virtual machine's Windows Firewall for TCP port 1433.

After making configuration changes to SQL Server's remote access settings or modifying firewall rules that affect SQL Server connectivity, restarting the SQL Server service is often required for these changes to be fully applied and become effective for new connections.