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.

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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)

I got the error when i uploaded my files over the server but on local host it is working fine.

Anyone can suggest me how to resolve this error.

What I have tried:

on local host, project is working fine but when i am uploading on the server then facig 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)"

Posted 13-Mar-24 2:23am

shobhit saxena1988

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CHill60 13-Mar-24 8:46am

Have you checked that SQL Server (on the server) is configured to allow remote connections?

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CHill60 · Answer 1 · 2024-03-13T02:47:00

Solution 1

Follow the instructions provided by Microsoft - A network-related or instance-specific error occurred - SQL Server | Microsoft Learn[^]

Posted 13-Mar-24 2:47am

CHill60

_Asif_ · Answer 2 · 2024-03-13T22:10:00

On your localhost, SQL Server is most probably installed on your local machine, and your SQL Server connection string points to your local SQL Server. However when you deploy your application on a Server, usually SQL Server is installed on a separate Machine but your application connection string probably pointing to your local credentials (Maybe because you have not changed it).

You need to get your SQL Server credentials including IP, instance name, userId, and password, make a fresh connection string, update it on your App configuration file, and then hopefully you will be good to go.