I want to display data from a table in SQL server into an external SharePoint list but I keep getting the following error.
Cannot connect to the LobSystem (External System). Reason: '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. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)'
Related
I'm trying to connect to a local SQL Server Express database using EF Core with this connection string:
"Server=(localdb)\\WIN-R84DEUE96RB\\SQLEXPRESS;Database=rmcsql;Trusted_Connection=True"
I get this error:
fail: Microsoft.EntityFrameworkCore.Database.Connection[20004]
An error occurred using the connection to database 'rmcsql' on server '(localdb)\WIN-R84DEUE96RB\SQLEXPRESS'.
fail: Microsoft.EntityFrameworkCore.Query[10100]
An exception occurred while iterating over the results of a query for context type 'RMC_IEM.DataStore.EF.ApplicationDBContext'.
Microsoft.Data.SqlClient.SqlException (0x80131904): 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. (provider: SNI_PN11, error: 52 - Unable to locate a Local Database Runtime installation. Verify that SQL Server Express is properly installed and that the Local Database Runtime feature is enabled.)
What is wrong with this connection string?
I have SQL Server running on Linux and I want to access it on SSMS (SQL Server Management Studio) in Windows.
Facing this issue!!
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. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (.Net SqlClient Data Provider)
I already made some changes in Configuration Manager:
Change Built-in account to Local Service;
Enable all the protocols in SQL Server Network Configuration
And when I'm trying to access to the servername with windows authentication I'm getting the following error:
TITLE: Connect to Server
Cannot connect to *_DESKTOP_*.
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. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 2)
I run the command ipconfig/all and I get this:
What I should do next?
Thanks!
I used the following windows command to share my local database : -
sqlLocalDB share v11.0 IIS_DB
When trying to connect to the database via the database explorer in Visual Studio 2012 using the shared name I get the following error: -
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. (provider: Named
Pipes Provider, error: 40 - Could not open 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 Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 51 - An instance name was not specified while connecting to a Local Database Runtime. Specify an instance name in the format (localdb)\instance_name.)
in my case I missed the instance_name in the connection string, which was v11.0 for my SQL 2012.