SQL Express remote connections


Networking protocols are disabled by default in SQL Server Express. The error message you will get when trying to connect from SQL Native Client will look like this

 

“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 default settings SQL server does not allow remote connection. ( provider: Named Pipes Provider, error: 40 – could not open a connection to SQL server. )”

 

The solution to this is to enable remove connectivity on SQL Express; see the following link for info on how to do this.

http://blogs.msdn.com/sqlexpress/archive/2005/05/05/415084.aspx

 

Brad Sarsfield


Comments (45)

  1. msbarglo says:

    I’m having a problem registering a program that has MSDE(sql 2000) embedded in software after entering the CD key I get the following message:

    "An error occurred attempting to register your copy of Encompass.  The underlying connection was closed: Unable to connect to remote server."

    Can you help?  I think I’ve done everything I can and noone else has a clue.

  2. SQL Protocols says:

    This error message is not thrown by SQL Server network layer. Rather it comes from .Net Framework Networking layer. My best guess is that you don’t have network connectivity to Encompass online registration center. You can contact Encompass or find solution of .NET netowrking issue on http://forums.microsoft.com/MSDN/ShowForum.aspx?ForumID=40&SiteID=1.

  3. GIDEON says:

    Hi i have the following error.

    kindly give some suggesion

    ‘ROW_NUMBER’ is not a recognized function name.

    No rows affected.

    (0 row(s) returned)

  4. Matt Neerincx [MSFT] says:

    ROW_NUMBER is a function that is only supported in SQL 2005, verify that your database is SQL 2005.  For SQL 2000 you can use RANK function to get similar results, see:

    186133 How to dynamically number rows in a SELECT Transact-SQL statement

    http://support.microsoft.com/default.aspx?scid=kb;EN-US;186133

  5. G Ganesan says:

    I have installed sql express 2005 and attached sql 2000 server datafiles.

    I have tried to delete users from the databases but failed

    help me

  6. Miguel says:

    Hi, when I start manually the service: SQL server (MSSQLSERVER) it stops immediatily, any idea why is this happening?

  7. Antonio says:

    how can i set up an odbc connection to an sql server, between a home pc and with the business lan. The business lan run under sbs2003.

    I set up the firewall and router for the sql ports (1433 and 1434)

    I have sqlexpress 2005.

    In sql native client, in my lan i do:

    servername: serversqlexpress.

    but at home, what ip adress and name should i put?

  8. Nguyen Tien Viet says:

    I have a Error:

    "TITLE: Connect to Server

    ——————————

    Cannot connect to NTVSQLEXPRESS.

    ——————————

    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: SQL Network Interfaces, error: 26 – Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1) "

    HELP ME !

  9. This error was most frequently hitted by our customers, and in this post, give a brief summary of troubleshooting

  10. samir says:

    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)

    ___

    This following erroer is genereted, when i open sql server 2005 express

  11. Ferdimar says:

    The sqldatasource button in the toolbox of my newly installed Microsoft Visual Basic 2005 is not activated. Please tell me how toactivate it.

    I have a problem connecting also to a MySQL database in CA and i am in the Philippines please help me how to do it.

    At least show me step by step.

  12. Hiren says:

    Hi

    When I try to connect database of sql server which i made in vs 2005 i got error massage

    "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)"

    My all instance is running , I wrote exception in firewall , I enabled  all protocols  

    I am install only vs 2005 Express edition

  13. I did not resolve it?? says:

    What’s else for Enterprise Edition?

    When the SQL Server 2005 setup completely, it did not ask for me like one I did that it’s needed to fill Instance_name, Database_name etc.. It just done without any announcement.

    My TCP/IP was on PC, sure, including firewall option enabled. But I did not connect with the right named host_name.

    Checked registry with HKEY_LOCAL_MACHINEMICROSOFTMS_SQLSERVER, I did not found any key named as Instance.

    How do I solve it now?  

    Thank you very much!

  14. Gopal says:

    We are trying to connect from businessobject to MS analysis server 2005, but is the error message we are getting. Can anybody advise in resolving this issue:

    An error has occurred while attempting to connect to the OLAP server. Failed to intialize(the following component Microsoft OLE DB Provider for Analysis Services 2005 returned server error(The Physical TCP/IP connection failed: AN existing connection was forcibly closed by the remote host; The peer prematurely closed the connection.))

  15. i am trying to connect with the server database through remote connection, when it give the followint error msg, pls help…..

    (serverall-login name)

    Login failed for user ‘ServeAll’. The user is not associated with a trusted SQL Server connection. (.Net SqlClient Data Provider)

  16. if anybody will help me, its a great help,

    normally The datagridview column types allow only

    textbox,Combobox,checkbox,button,linkbutton and image button in vb.net2005.

    but

    i want to add DateTimeColumn into my datagridview,

    i am using vb.net 2005

    thanks in advance

    uuurrrgggeeennnttt.

  17. Sathish says:

    Still i’m getting the same error, even i tried Rank() function but it complied with error as

    ‘rank’ is not a recognized function name.

  18. Raghu says:

    how tp "Enable remote connections for SQL Server 2005 Express or SQL Server 2005" throug installer. We want this to be done through installer insted of doing it manually.

  19. davidbotero says:

    Hello, I have the same problem as many of you have, I’ve followed various articles on how to set up the remote connections, but it still doesn’t work, I can connect locally, but when it comes to remote connections it always gives me this error:

    HResult 0x2AF9, Level 16, State 1

    TCP Provider: No such host is known

    Can anyone help me?

    Thanx

  20. Jon says:

    I have a very similar problem as both of you as well!

    I have MS SQL 2005 Express and VWD and cannot get the login control to work due to an SQL error that reads:

    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: SQL Network Interfaces, error: 26 – Error Locating Server/Instance Specified)

    My server instance is SQLEXPRESS

    I have enabled TCP/IP and Named protocols, added firewall exceptions for sql server/browsing, and I just cannot get past this error.  It is on a hosted site so Im trying to remote into the site and log in on my own asp login control, but the control isx supposed to verify against the db but it doesn’t, it just gives the above error.  It worked fine when it was local, but not when transfered to the hosted envrionment.  

    This is how I know it’s not an asp issue, but an sql remoting problem.  

    Any direction would be greatly appreciated as Im an inexperience db configurer.  I have been googling this problem for about 3 weeks and everything people suggest is not working.

  21. SQL Protocols says:

    davidbotero: It’s likely that the problem is not a SQL Server problem. Have you tried pinging the remote machine? If you are unable to get a response from it, then it sounds like there is a problem elsewhere.

    HTH -Tres London

  22. Sapper says:

    Hello all,

    I am having a similar problem. I am creating a simple application to alter information in a database. I have created the application in Microsoft Visual Basic 2005 Express Edition and am trying to connect to a local database created using SQL Server Management Studio within SQL Server 2005. When I go through the Add New Data Source wizard in MVB 2005 Express and browse to the database I want to connect to I get an error 26. I don’t understand what to do. Everything is local on one machine. Under the advanced tab it won’t allow me to change the Data Source to anything but .ServerName.

    Please Help

  23. amitranjan236 says:

    Hi all,

    I need to know how to connect to a remote sql server using a C# window application. Let me make, my issue more clear. I want to develop a application in C#, that can connect to any SQL server whether its local or remote using valid crendentials. I saw many appliations, that search automatically into LAN for SQL Server instances. But I want user to put either server name or ip address instead of searching for insatnces automatically.

    Please help me out. if there is any online resource regarding this, please put it in reply

    Thanks and regards

    Amit Ranjan

  24. Ric says:

    Excelent note thanks, i can solve my problem!

  25. Kanne says:

    How could I connect to a database in Sqlexpress  using ODBC .Some guy, could you give me a connection string ?

  26. SQL Protocols says:

    This web page has a list of many different variations of valid connection strings, depending on what you want to do. Remember, "don’t miss the server name syntax ServernameSQLEXPRESS where you substitute Servername with the name of the computer where the SQL Server 2005 Express installation resides."

    http://connectionstrings.com/?carrier=sqlserver2005

  27. BiswaRanjan says:

    I have a problem in back up.

    Error message 18456

  28. veeramani says:

    am developing the vb.net client/server application

    this is my connection string

    Public con As New System.Data.SqlClient.SqlConnection("Integrated Security=SSPI;Initial Catalog=TestData;Data Source=(local)")

    this connection working in local, my problem is when i try to connect my server remotely like Public con As New System.Data.SqlClient.SqlConnection("Integrated Security=SSPI;Initial Catalog=TestData;Data Source=(192.168.2.1)") its can’t support

    anyone help me please how to connect remote server

  29. SQL Protocols says:

    Although you need () for (local), you don’t need it for IP address. i.e. you should use — Data Source=192.168.2.1–. If you still see problem, Please post a question on our forum and provide more details about how it fails. http://forums.microsoft.com/MSDN/ShowForum.aspx?ForumID=87&SiteID=1

    Thanks.

    Xinwei

  30. mohamed nomeer says:

    how i can Enable Sql server 2005 remote connection in vb.net(By Code)

  31. SQL Protocols says:

    Hi Mohamed,

     SMO provides a .NET interface to many SQL management functions, including the ability to enable remote connections.  I don’t have a code sample on hand, but here is the Books Online link for SMO, where you can read more: http://msdn.microsoft.com/en-us/library/ms162169.aspx

    Hope this helps!

  32. JCHTIBLE says:

    Thanks for this tips !! Very usefull !!

  33. Sandra_ch84 says:

    Hello,

    I have microsoft sql express installed on one computer running on windows authentication.

    I am trying to access the tables in one of the databases on it from another computer.

    When i enter the server ip and use windows authentication, it logs in successfully. and i am able to view the databases on the other pc. however i am only able to view system tables. and not the ones i want (which are user tables).

    can anyone help? I would be grateful. i have been stuck on this for days and i’ve searched every possible site on the internet. thanks in advance!

    Configuration: Windows XP Internet Explorer 7.0

  34. Alex says:

    Hi,

    I’m using mssql 2008 and trying to mirror a database from a server to another but when i tried to connect to my mirror server instance, error 26 always occur.

  35. Rupesh says:

    I have following error in LAN setting in sql 2005

    ——————————

    Cannot connect to COM.

    ——————————

    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: 2)

    For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=2&LinkId=20476

    ——————————

    BUTTONS:

    OK

    ——————————

  36. ajay says:

    hi

    i want to upload my site in a blog

    so how to i connect with the database

    when i m uploading then this is giving an error

    this is tha page in which error is