A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.Follow the steps below to fix the problem. The steps are based on:
C:/Windows/System32/services.mscand start the SQL Server instance, e.g., XQLEXPRESS03 (typo of SQLEXPRESS03), created when SQL Server setup:
C:/Windows/System32/mmc.exeand configure the SQL Server Network: