Connection from Vb.net application could not be established : Sql Server error 40

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I loaded Sql Server 2008 on a Windows Server 2003 machine and my client machine is Windows 7 .

When i connect from windows 7 using SQL MANAGEMENT STUDIO it is connection. but when i connect through my application is it showing sql server error 40.

my connection string is

VB

Data Source=192.168.1.XXX,1433; Network Library=DBMSSOCN; Initial Catalog=myDB;
User ID=myUserName; Password=myPwd

but when i connect through windows xp machine it is working fine.

it it the problem of connection string? Please help

Thanks in advance
Biju

Posted 6-Feb-13 18:13pm

bijukmv

Updated 11-Feb-13 11:30am

Maciej Los

v2

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Maciej Los 11-Feb-13 17:31pm

SQL Server 2008 is installed on Windows Server 2003 32 or 64 bit?
Windows 7 is 32 or 64bit OS?

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Maciej Los · Answer 1 · 2013-02-11T11:35:00

To fix it, read these articles:
http://blog.sqlauthority.com/2007/04/23/sql-server-fix-error-40-could-not-open-a-connection-to-sql-server/[^]
http://blog.sqlauthority.com/2009/05/21/sql-server-fix-error-provider-named-pipes-provider-error-40-could-not-open-a-connection-to-sql-server-microsoft-sql-server-error/[^]
http://blogs.msdn.com/b/sql_protocols/archive/2007/05/16/named-pipes-provider-error-40-could-not-open-a-connection-to-sql-server-microsoft-sql-server-error-xxx.aspx[^]

Similar solved questions:
error: 40 - Could not open a connection to SQL Server[^]
connection to sql server error 40 and 53[^]