A network-related or instance-specific error occurred while establishing a connection to SQL Server....

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SQL-Server-2008

i developed a database using c# and SqlServer 2008 ....

i make an exe setup and installed in another computer this time i install sqlexpress edition
i import the data file but when i run the application i got the following error..

SQL

System.Data.SqlClient.SqlException: 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)
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)

Posted 8-Apr-14 23:59pm

abdul manan 7

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Schatak · Answer 1 · 2014-04-09T00:02:00

Solution 1

The server was not found or was not accessible.
To solve the problem, you should
Verify that the instance name is correct and that SQL Server is configured to allow remote connections.

Posted 9-Apr-14 0:02am

Schatak

Comments

abdul manan 7 9-Apr-14 6:04am

where to check instance name and how to allow remote connections

Schatak 9-Apr-14 6:11am

Try this link

http://blogs.msdn.com/b/walzenbach/archive/2010/04/14/how-to-enable-remote-connections-in-sql-server-2008.aspx

Er. Puneet Goel · Answer 2 · 2014-04-09T00:06:00

Solution 2

Get your SQl Instance Name:

SQL

SQL Server Instance Name :

In SQL Server Management Studio->RegisterServers->double click your server to open the Object Explorer -> right click to select the properties window ->General Tab - to see the ServerName (instance name)



or Open a new query in SQL Server Management window  and execute the following

-- to get the sql server instance name

select @@ServerName

Posted 9-Apr-14 0:06am

Er. Puneet Goel

Comments

abdul manan 7 9-Apr-14 6:14am

Thanks for your reply but this is express edition of sql server
all i have is
import and export data
sql server configuration manager
sql server error and usage reporting
sql server instilation server

there is no sql server management studio

King Fisher 12-Apr-14 8:50am

http://www.microsoft.com/en-in/download/details.aspx?id=7593

install management studio

Er. Puneet Goel 9-Apr-14 6:22am

First go to Start >> Run >> CMD (Open command prompt). Once in command prompt run following command based on SQL Server version installed on local machine.

For SQL Server 2000:
C:\> isql -L

For SQL Server 2005 / SQL Server 2008:
C:\> osql -L
OR
C:\> sqlcmd -L