Verify that the instance name is correct and that SQL Server is configured to allow remote connections.Provider: Named Pipes Provider, error: 40 Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 53).A network-related or instance-specific error occurred while establishing a connection to SQL Server.The article discusses a thorough list of troubleshooting methods that can be used to connect to the SQL server.
![]() First of all, we will discuss problems that arise when you need to connect to the remote server using IP address as this is the most common cause. These steps are written in SQL Server 2008 R2 on Windows 10, but they can be used on other versions too with minor amendments. The error usually means that the SQL server is not found or TCP port is either unknown or wrong, or it can be blocked by the firewall. Method 1: Gather information about the instance of the SQL Server. In this section, we will discuss ways to check either the instance of the SQL Server is working or not, along with methods to fix it if it is not working. Step 1. Check if an instance of SQL Server is installed and is working or not First of all login to the computer hosting the SQL server instance. Now point to the SQL Server, and then point to Configuration tools Click SQL Server Configuration Manager. Now select SQL Server services and check in the right pane whether the instance of a database engine is running or not. Moreover, this can be opened directly by typing services.msc in the RUN and click OK. Opening services by typing services.msc in the RUN box. Now, check if the database engine has been configured to accept remote connections. After services have been opened you can see database engine in the right pane. In the case of the SQL Express, default instance will be SQLEXPRESS unless it is renamed by someone during installation. Check if the instance you are trying to connect has the same name as given in the services. Moreover, if you are trying to connect to named instant, then double-check if SQL Server Browser service is already running. Thus you need to check if the SQL Server Browser service is started on the server on which SQL Server is installed. In case, the database engine is not running then you need to restart it. So to start the Database Engine, in the right pane, right-click on the Database Engine (MSSQLSERVER default one), and then click Start. Check if the SQL Server Browser service is already running. Step 2. Obtain the IP address of the computer. First of all, from the start menu, click RUN and type cmd and press ok. In command prompt window type ipconfig and note down IPV4 and IPV6 addresses. Get the TCP port number used by the SQL server Follow the following steps to get TCP port number used by the SQL server Using SQL Server Management Studio ( SSMS) connect to the instance of SQL server From object explorer expand Management, expand SQL server log and click on the current log on which you have to apply filter. To apply filer click apply filter and type server is listening on in Message contains text box.
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