Error :(provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (

Hi,

I am trying to connect to my SQL Server 2005 but it gave me following error message.

TITLE: Connect to Server

ADDITIONAL INFORMATION:

An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 53)

So, Please help me to solve this problem.

tnks.

check the following
(a) First makesure that the Database Service of this instance is
running... use Configuration Manager
(b) if the service is running, check is this a named instance. in
that case is SQL Server Browser service running.
(c) Check Remote COnnection is enabled for Local and Remote
COnnection using TCP/IP -- use SQL Server Surface Area Configuration
Tool to view and configur
(d) Check all the protocols are enabled or not -- Use SQL
Configuration Manager -- SQL Server Network Configuration --
Protocol for MSSQLSERVER -- Enable TCP/IP and NamedPipe

Madhu

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Hi Madhu,

thanks for replying me. You r right my services are not started and also it want show mw in services list and and also not in configuration manager list.. The TCP/IPprotocole n NamedPipe was eneabled. But the services are not started and also wan't show mw in the list.

So, Help me wht i have to do to solve this problem.

Thanks,

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i doubt u have installed only client tool. check in control panel /services whether microsoft sql server services are there or not.

Madhu

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No i can't see the Microsoft SQL server services in control panel/services.

So what i have to do? Is i have to install it again?

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it means u don't have any local instance installed on your machine. If you really need a local instance , again go thorough the setup process and select the Services like Database engine/Analysis service/reporting service ets as u required.

Madhu

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i tried to reinstall it again. But when i was reinstalling it show me the warning message at the time of System Configuration Check.

The warning message is

- SQL Server Edition Operating System Compatibility (Warning)

Messages

SQL Server Edition Operating System Compatibility

Some components of this edition of SQL Server are not supported on this operating system. For details, see 'Hardware and Software Requirements for Installing SQL Server 2005' in Microsoft SQL Server Books Online.

So, what i ll do give me hint?

thanks a lot

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Which edition of sql server 2005 you are installing. Enterprise Edtion will not be installed on XP

refer this for more details : http://support.microsoft.com/kb/910228

Madhu

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Hi

i m having same problem in connecting the Sql Server 2005. I am trying to connect the Sql Server from 'Sql Server Management' with 'visual web develeoper'. But it give error as below

"An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)"

i have check all the things as u said on ur previous post 03-01-2007, services & browser are running, protocols are enabled and etc....

please help me to solve this problem.......

thanks in advance

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I have had this problem occur several times with several different machines, but most particularly when running XP and installing SQLExpress or SQL Server 2005. Even if you enable all the protocols and use the Surface Area Configuration Tool to enable remote access, I have found that the Windows Firewall settings are not necessarily updated. Simply edit the firewall rules to allow SQL Server TCP/IP usage (or turn off the firewall - NOT recommended!) and you will be able to connect.

Mike

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Hi,

i m having same problem in connecting the Sql Server 2005. I am trying to connect from my windows app and create odbc conn and from Integration service project(OLE DB connection). I can connect to my SQL server from SQL server management studio.

"An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)"

Plese help,

Thanks

|||Thank you! That solved it for me... I installed SQL Server 2005 Developer's Edition, on Windows XP Pro SP2. The developer's edition turns off remote access by default, and I turned it on using the "Surface Area Config" tool (local and remote, over TCP/IP and Named Pipes).

Then, I updated the Windows firewall to allow access to the network. Since I have a named instance, I needed to allow both the instance's SQL Server process AND the shared SQL Browser service through the firewall.

Here's a Microsoft Knowledge Base for doing the firewall exception:
http://support.microsoft.com/kb/841251

Here's the path for the SQL Browser program (for the needed a firewall exception):
c:\...\mssqlserver\90\shared\sqlbrowser.exe

As a final note on the firewall, I configured the "scope" in the firewall exception rules so that only computers on my local subnet can access the SQL Server instance.

Now I can connect to my SQL Server with my Visual Studio software, without that nasty error.|||

hi,

i found the solution...Actually the error was because the wrong character used instead of using '\' i have used '/'. When used '\' it will say "Error 1 Unrecognized escape sequence". So in order to use "\" need to put the '@.' at infront. (@."server=..\..;.........");

Thank You.