![SQL Server Error 40: A network-related or instance-specific error occurred while establishing a connection to SQL Server. SQL Server Error 40: A network-related or instance-specific error occurred while establishing a connection to SQL Server.](https://techyaz.com/wp-content/uploads/2018/01/error-40-min-1280x720.jpg)
SQL Server Error 40: A network-related or instance-specific error occurred while establishing a connection to SQL Server.
![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 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](https://jbswiki.com/wp-content/uploads/2020/03/blog90_1.jpg)
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
![net - Why did a network-related or instance-specific error occur while establishing a connection to SQL Server? - Stack Overflow net - Why did a network-related or instance-specific error occur while establishing a connection to SQL Server? - Stack Overflow](https://i.stack.imgur.com/2xbHt.png)