I am trying to connect to the AdventureWorks database while using Visual Basic 2005 Express. I am currently using the SQL Server 2005 trial version. Here is the error message:
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)
I found some threads in the archives when I researched this problem but couldn't relate the answers directly to my situation. Prior to installing SQL Server 2005 Trial version, I used the SQL Server 2005 Express edition on this machine and did not have any problems connecting to databases. I removed the express edition prior to installing the trial version.
In the Visual Basic "Add Connection" dialog box, I leave the default radio button checked ("Use Windows Authentication") as I have always done.
Any help in getting this resolved will be appreciated.
Hi, Have installed the club site starter kit on my pc and all it works well locally. I've used visual studio to publish my site to my third party webhost. Ive created the DB on their server and altered the connection string to:- <connectionStrings> <!--<add name="ClubSiteDB" connectionString="Server=xx.xx.xx.xx;Database=somedatabasename;User ID=user;Password=Password;Trusted_Connection=False" providerName="System.Data.SqlClient"/>--> </connectionStrings> Now its on the webhosts server i get a System.Data.SqlClient.SqlException: 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). This occurs when im trying to login in or register. Can any one help.
Hi , I got this error when i uploded my web site on web server. I provided the connection string in web.config provided by my web server.Connection string is ok..i dont know what is wrong....searched the net a lot but could not find any solution. 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)
I am unable to connect to an instance of SQL Server on my machine.
Using osql -S np:\.pipemssql$seattlesqlquery -E I can but if i specify the instance name as below it fails. Also, using sqlwb i am not able to connect to the server.
Named Pipes is enabled.
Any ideas??
C:>osql -S np:\.pipemssql$seattlesqlquery -E 1> use master 2> go
C:>osql -Sgod2seattle -E -dmaster [SQL Native Client]SQL Network Interfaces: Error Locating Server/Instance Specified [xFFFFFFFF]. [SQL Native Client]Login timeout expired [SQL Native Client]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.
Problem started after installing SP2 on my eval edition.
Ive been having this issue for a while - i did fix it but after uploading my site i again have this problem. Replicating the same steps as i had before didnt resolve.
I have a PC running WinXP + updates SQL 2005 Express + Updates. A server running SBS Windows 2003 Standard + updates and .Net 3.5 framework/extensions etc. It also has SQL 2000 + SP3 (i think - i say i think as one applications claims to have SQL 2000 SP3, if i right click SQL in the bottom right hand corner and select About it says SQL 2000 8.00 2039)
I created an app in VS 2008 and connected it to the SQL 2000 database on the server. I then have membership and roles enabled in this app too. Works fine on my PC. I decide to upload it to the server for testing. I receive the message:
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)
I played around and fixed it somehow but the problem returns. So far in answer to the questions from the blog:
1) Make sure your server name is correct, e.g., no typo on the name. Im certain im using the correct server name 2) Make sure your instance name is correct and there is actually such an instance on your target machine. [Update: Some application converts \ to . If you are not sure about your application, please try both ServerInstance and Server\Instance in your connection string] Not too sure about this one as far as i know this string allowed me to connect to the database when using it from my local PC <connectionStrings> <add name="SalesConnectionString" connectionString="Data Source=SERVER;Initial Catalog=Sales2008; Integrated Security=True; user=sa; password=;" providerName="System.Data.SqlClient"/> </connectionStrings> 3) Make sure the server machine is reachable, e.g, DNS can be resolve correctly, you are able to ping the server (not always true). If i can connect from my local PC guess this would be ok?? 4) Make sure SQL Browser service is running on the server. I right click SQL in the bottom right hand corner and select two services (Sql Server and Sql Server agent) both are running. 5) If firewall is enabled on the server, you need to put sqlbrowser.exe and/or UDP port 1434 into exception.
Firewall is disabled under services until i can resolve this and then i can test it.
Im lost at this point as where to look for the solution on this one. Ive also checked to see if SQL 2000 Client Network Utitlity has TCP and Named Pipes enabled and it has.
I cant upgrade this instance to SQL 2005 as it wouldnt do it. I can only add SQL 2005 side by side but then im not to sure what to do to get the database transferred over (that'll be another day i think)
I am having a problem connecting to my sql server express instance from a remote computer. I continue to get the above mentioned error. If I connect for the localhost everything works fine however when I try to connect from a different computer on the LAN it gives me this error. I have turned on remote access and still no luck. Any ideas? Any help would be appreciated.
I'm currently learning my way around with SQL Server 2005 and asp.net 2.0, and for this I wrote a little site that uses SQL Server for it's backend.
I developed it on my laptop, and it works great, until I deployed the website to my test server, so it's visible to the outside world.
The instance I try to access any page that invokes the database, I get the following error: 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).
The server doesn't differ much from my laptop setup, except that it accepts connections through named pipes and TCP/IP and has the Network Service as a user(I also tried running the website under Administrator privileges, just to test it out).
Both IIS and the SQL Server running on the same machine(Windows 2003 Server SP1), and the SQL server accepts connections from a locally running SQL Management Studio Express instance. However: It does not accept connections from my laptop, which resides outside the domain. The server is set to use Windows Authentication for log ins.
What am I doing wrong here?
EDIT: Filled out this found questionare:
[1] Client side:
What is the connection string in you app or DSN? (please specify) connectionString="Data Source=.SQLEXPRESS;Initial Catalog=EroSite;Integrated Security=True" providerName="System.Data.SqlClient" If client fails to connect, what is the client error messages? Error Locating Server/Instance Specified Is the client remote or local to the SQL server machine? LocalCan you ping your server? YesCan you telnet to your SQL Server? YesWhat is your client database provider? ADO.NET2.0 Or/And, what is your client application? Website using DataSets (Works fine with Server Management Studio) Is your client computer in the same domain as the Server computer? Local machine What protocol the client enabled? Shared Memory, TCPIP, Named Pipes.Do you have aliases configured that match the server name portion of your connection string? NoDo you select force encryption on server and/or client? No
[2] Server side:
What is the MS SQL version? SQL Server 2005What is the SKU of MS SQL? ExpressWhat is the SQL Server Protocol enabled? Shared Memory | TCPIP | Named Pipes Does the server start successfully? YesIf SQL Server is a named instance, is the SQL browser enabled? YesWhat is the account that the SQL Server is running under? Local SystemDo you make firewall exception for your SQL server TCP port if you want connect remotely through TCP provider? not applicableDo you make firewall exception for SQL Browser UDP port 1434? In SQL2000, you still need to make firewall exception for UDP port 1434 in order to support named instance. Not applicable
[3] Platform: What is the OS version? Windows 2003 SP 1Do you have third party antivirus, anti-spareware software installed? No
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)
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: 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)
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
I have 2003 server installed on my machine along with MS SQL Server Management Studio and I am able to connect fine to SQL 2000 Instances. On my laptop running Vista Enterprise, I can not connect to these exact same instances via MS SQL Server Management Studio as I am getting the above error. Does anyone else have this problem? I have no idea what to check for anymore. Thanks in advance.
ASP v2.0I am getting this error when attempting to sign in to my site once uploaded to the server. Can anyone help me to resolve this error? Server Error in '/' Application.
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) Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: 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)Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
First-time poster (and very new to ASP.NET, so please be patient) - I am using VS 2005. I have an ASP.Net 2.0 app that is using Forms Authentication and a Login server control with AspNetSqlMembershipProvider. I have an instance of ASPNETDB.MDF in the App_Data directory on my local machine and all works well (or at least as expected). I used the Copy Web Site function to port the app (including the ASPNETDB.MDF files) to my production platform, where I encounter the error mentioned in the subject line. I have found posts (both here and other forums) that mention enabling TCP/IP using Surface Area Configuartion Utility, SQL Server Browser are exempt from firewall, and a few other things. My production machine does not have SQL SVR 2005 installed nor SQL SVR Express. Do I have to install SQL Server Express onto my production platform in order to resolve this, or is there another means (something in SQL Server 2005 Management Studio on my local machine) that will enable me to do this on the production machine?Also, I have been told that it is possible to use a database on another machine as the data store for authentication. Does anyone know how to do that? This would make the first question moot.Thanks in advance!
I have tried to find the solution for the subjectline(provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) and i got the solution from the below link but when I set my web.config file according to the posted help i couldn't resolve it kindly help me for thatmany thanks,http://www.aquesthosting.com/HowTo/Sql2005/SQLError26.aspx
All aspects of my website work as expected when previewed in the browser locally. It appears that I successfully published the website to my hosting company server.After successfully accessing the login page from a hyperlink on the homepage, I attempt to login and receive the following error: Please advise. Server Error in '/' Application.
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) Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: 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)Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
Ok can somebody please explain to me why only 1/2 my project is getting this error. I am working with SQLExpress on a remote windows 2003 box. The sql server has its service running and the browser is also running. The server has been set to allow remote connections and to accept TCP/IP and Named Pipes. Now, the website uses asp.net membership and roles to allow the users to login, which actually works. So I know that there are no errors in that connection string. However, all the data acess code is compliled as a sepeate class library thats referenced in the bin directory. When calling those methods to beind to a control in code, is where i run into this error. The class library connection string in the app.config file is exactly the same as the connection string in the web.config...i have checked permissions as well, im at a loss to the reason why this is not working....its probably something simple, but im not finding it.
On a seperate note - How do i get the remote database to show up in the server explorer on vs2008, i have tried putting in the ip addressinstance name, and a combo of there items, it will not connect. I have a feeling the two issues are connected. Also fyi, on the remote box, I am able to login with the sql studio express, so im not really sure exactly wuts gong on. Both items are really important and i need to be able to use both of them. Thanks, Jeremy
Hello, I have deployed myWebApp on the IIS. All went well now, but the site does not have any connection with the database. I've already done a search on the error 26, which gave me alot of hints about solving the problem.Still I'm gettting this error. I already enabled the remote connections through the sql surface area configuration.Could it have something to do with the fact that I use LINQ? I can't find any connectionstring to modify anywhere ... Help would be appreciated.
Hi,I am working with Webparts in ASP.NET and getting following error 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) Can anybody knows how to fix this issue. I have SQL Server 2005 Developer edition.RegardsAhmad
I made a simple ASP.NET 2.0 Website that uses memberships, roles, and access to MS SQL Server 2005 database. Everything works fine on my development computer (WinXP Pro). When I deployed this Website on another computer (WinXP Pro) and tried to access the main page from the same computer, I get the error below. I disabled the Windows Firewall (the only one I use), I ensured that SQL Server Browser is Active and Running, and I changed Remote Connections in SQL Server 2005 Surface Area Configuration to use Local and Remote connections for all the components. In my Web.Config I used: <connectionStrings><add name="sqlConnString" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|DBdemo.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient"/></connectionStrings> Any idea why am I getting the following error?
Server Error in '/WebDV' Application.
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) Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: 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)Source Error:
Line 2027: sqlConnection = New SqlConnection(sqlString) Line 2028: Line 2029: If sqlConnection.State = Data.ConnectionState.Closed Then sqlConnection.Open() Line 2030: If Not Page.IsPostBack ThenSource File: C:InetpubwwwrootWebDVDefault.aspx.vb Line: 2029 Stack Trace:
[SqlException (0x80131904): 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)] System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +734787 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +188 System.Data.SqlClient.TdsParser.Connect(Boolean& useFailoverPartner, Boolean& failoverDemandDone, String host, String failoverPartner, String protocol, SqlInternalConnectionTds connHandler, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject, Boolean aliasLookup) +820 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +628 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +170 System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +130 System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +28 System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +424 System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66 System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +496 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105 System.Data.SqlClient.SqlConnection.Open() +111 Default1.Page_Load(Object sender, EventArgs e) in C:InetpubwwwrootWebDVDefault.aspx.vb:2029 System.Web.UI.Control.OnLoad(EventArgs e) +99 System.Web.UI.Control.LoadRecursive() +47 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061
Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
Hi All: I'm having problem connecting remotely to my sql 2005 server. I do get this error msg 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) I'm using a named Instance and conncting like 192.168.2.1DB120 I have configured to server to accept remote connection. I can connect locally bout not remotelly
Same files are workign fine in my office with SQL Server 2005 enterprise edition and ASp.net 2.0. on Windows server 2003. I do not get this error. But at home I am facing this problem again and again.
This problem happens on this particular machine and doesn't happen on other machines that I have. And I think this problem belongs to this forum. Because the problem is triggered by a special setting in the connection string. I followed the steps of threads including Xinwei Hong's instruction for fixing this error(26) but has no luck.
The problem occurs when I call SqlConnection.Open().
I am using window xp, sql2000. the named instance is on local machine, my connection string is like
Whenever I change Asynchronous Processing=true into Asynchronous Processing=false, the problem is gone.
This problem also occurs when I use Visual Studio - Server Explorer - Add Connection dialog - Advanced button - Advanced Properties window where you can set Asynchronous Processing property to true.
I'm having an issue when moving my site from my laptop that's running VWD Express and SQL 2005 Express to my production Windows 2003 server running SQL 2005 Standard. The site is a portal site that authenticates to my Active Directory, and uses roles bases in SQL. I can open the site on the laptop and everything works fine and I have no problems. Once I copy the site to the production server and try to access the site, I get the login page fine and try to login. The default page never opens so I'm thinking this must be some type of roles issue. Do I need to do anything with my ASPNETDB.MDF file to make it work with SQL 2005 Standard instead of Express version? I've already made sure that the SQL server is accepting remote connections...what other things do I need to do to my SQL server to ensure proper functioning? Any particular security user I need to be running particular services under? Thanks in advance... MikeD
Hi, I have installed SQL Server 2005 and Visual Studio 2005 in my machine. I got an error when I tried an example.
"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)" .
I followed many advice online and did the following but still wrong.
Enable networking protocols during managment configuation.
add port 1343 on firewall or turn off the firewall.
make changes in web.confige as
Code Snippet <?xml version="1.0"?> <!-- Note: As an alternative to hand editing this file you can use the web admin tool to configure settings for your application. Use the Website->Asp.Net Configuration option in Visual Studio. A full list of settings and comments can be found in machine.config.comments usually located in WindowsMicrosoft.NetFrameworkv2.xConfig --> <configuration> <appSettings/> <connectionStrings> <remove name="LocalSqlServer"/> <add name="LocalSqlServer" connectionString="Data Source=localhostand;Initial Catalog=Players;User ID=test;Password=test"/> <add name="SqlConnectionString" connectionString="Data Source=localhostand;Initial Catalog=Players;User ID=test;Password=test"/> <add name="OdbcConnectionString" connectionString="Driver={MySQL ODBC 3.51 Driver}; server=localhost;database=players;uid=test;pwd=test" /> <add name="OleDbConnectionString" connectionString="Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:andplayers.mdb" /> </connectionStrings> <system.web> <!-- Set compilation debug="true" to insert debugging symbols into the compiled page. Because this affects performance, set this value to true only during development. --> <compilation debug="true"/> <!-- The <authentication> section enables configuration of the security authentication mode used by ASP.NET to identify an incoming user. --> <authentication mode="Windows"/> <!-- The <customErrors> section enables configuration of what to do if/when an unhandled error occurs during the execution of a request. Specifically, it enables developers to configure html error pages to be displayed in place of a error stack trace. <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm"> <error statusCode="403" redirect="NoAccess.htm" /> <error statusCode="404" redirect="FileNotFound.htm" /> </customErrors> --> </system.web> </configuration>
I am trying to use the visual studio for database professionals. I get the error 26 when I try to import a schema from an existing database. I am using a database from my local instance. I test the connection and the test succeeds. What is causing the error 26?
I have been researching this problem on the net. I have everything setup, here is the wierd part. I did a test windows application, and that application connects into my database just fine. I have SQL DEV 2005, everything is on my laptop. I have websites that I have wrote that connects fine.
I have application that give me this error. Now the only thing is that I wrote this windows app on a diffrent machine, with a diffrent SQL 2005 server. I had to move everything on my laptop, so I can finish on site at the clients place. So I grabbed the project, copied it over, and opened it on my laptop. No problems. I created a new database, scripted everything from the other server, and ran those scripts on my laptop to create the tables, SP etc.
Now my test application I created on my laptop, I can connect to the databse just fine with this string.
I can also connect to the database that I brought over from the other server. Could there be somthing with the Datasets, or something like that? Any Thoughts?
I'm running Vista Ultimate. SQL 2005 is set as my Default instance, and SQL2000 is set as (local)SQL2000.
Today, actually half way through today, I restarted my computer after installing Photoshop Updates.
Upon getting my computer back up and running, I cannot access SQL2000 from any website on my computer, nor can I access it from SQL2005 Management Stdio. I CAN access it from Enterprise Manager (SQL2000 tool).
Whenever I run an web app that connects to it I get this error:
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)
Now I usually get these when ASP.NET can't point to the right spot, but in this case I'm pointing exactly where I need to go. Any thoughts?
--Edit
I should also add my password got changed a few days ago on our Domain. This was the first time restarting after the PW change.
I'm still having this problem after hours of research. I've tried changing my connection string, changing the name of my instance, reconfiguring SQL Express, and even went so far as to take my firewall down completely when adding Sql Browser and opening port 1434 to the exceptions list didn't work.
I've read the blog at http://blogs.msdn.com/sql_protocols/archive/2007/05/13/sql-network-interfaces-error-26-error-locating-server-instance-specified.aspx by Xinwei Hong - it seemed to be a nice approach to this problem and has obviously helped numerous people, but sorry Xinwei, it's not working for me.
I get the following error message when I try to use the Login control (out-of-the-box):
Server Error in '/' Application. 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)
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
SQLExpress database file auto-creation error:
The connection string specifies a local Sql Server Express instance using a database location within the applications App_Data directory. The provider attempted to automatically create the application services database because the provider determined that the database does not exist. The following configuration requirements are necessary to successfully check for existence of the application services database and automatically create the application services database:
If the applications App_Data directory does not already exist, the web server account must have read and write access to the applications directory. This is necessary because the web server account will automatically create the App_Data directory if it does not already exist. If the applications App_Data directory already exists, the web server account only requires read and write access to the applications App_Data directory. This is necessary because the web server account will attempt to verify that the Sql Server Express database already exists within the applications App_Data directory. Revoking read access on the App_Data directory from the web server account will prevent the provider from correctly determining if the Sql Server Express database already exists. This will cause an error when the provider attempts to create a duplicate of an already existing database. Write access is required because the web server accounts credentials are used when creating the new database. Sql Server Express must be installed on the machine. The process identity for the web server account must have a local user profile. See the readme document for details on how to create a local user profile for both machine and domain accounts.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: (Edited to preserve page formatting) [SqlException (0x80131904): 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)] System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +800131 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +186 System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject) +737554 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +114 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +421 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +181 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +173 System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +133 System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup) +27 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +47 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105 System.Data.SqlClient.SqlConnection.Open() +111 System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString) +68
Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433
When I click the [>] arrow in the upper-right corner of the login control and choose "Administer Website", click the "Select a single provider for all site management data" only one provider is listed: AspNetSqlProvider (default, selected). When I click the "Test" link, it hesitates for a while, then finally gives me the following screen:
Provider Management Could not establish a connection to the database. If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider.
I've verified (reverified, and re-reverified - to the point of performing several copy-paste functions from SQL Server Management Studio Express) the server and instance names. They are correct. I can connect to the databases through the Server Management Studio, but not through my websites.
I've tried using ServerInstance as well as Server\Instance, Server/Instance, and ServerInstance, port# - ALL to no avail.
This is all being done through localhost, so I don't see that this should be a DNS issue. I've verified that my SQL Server Browser service is running (and have restarted it after various configuration changes). I've added Sql Server Browser to the list of exceptions as well as opened up port 1433 and 1434 on my firewall. I've even tried taking my firewall down completely to run tests. And still I get that error.
[Edit: Accidentally posted prematurely]
Continuing on... my CURRENT connection string is as follows:
I would like to be pulling my hair out right now, but I've just about ripped it all out, so I'm running short on that as of yet. Does anyone have a solution for this problem? There may be something larger going on, since when I use the Login Control and set the "VisibleWhenLoggedIn" property to "False", it hides the control even when there's noone logged in (and nothing in the aspnetdb database.
I've installed SQL2005 on a server already running SQL2K on my laptop. SQL2K is the default instance, so I'm trying to connect to SQL2005 using MYSERVERSQL2005 as the instance.
The steps that I've taken are to apply SP2 and enable remote connections (TCP & Named pipes). I've also made sure the SQL Server Browser service is running and enabled.
The error message that I get via SQL2005 client tools is "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)"
I dont understand as to why i am unable to connect to 2005.
HiI have setup the membership schema on a hosted server using the asp_regsql.exe tool fine. I have setup roles/memberships using the website adminitraion tool and i have checked that its all being entered into my hosted MSSQL server. I have also setup my web.config file to point to the hosted server and all seems to be connecting ok! When i test/debug my project locally (using the F5 key), my login box works fine!How ever, i have now uploaded my project to my hosted server. If i put an incorrect login, then i get the usual 'Your login attempt was not successful. Please try again.' - So i know its connecting to the right database. How ever, when i enter the correct login details, i get the following error: 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) ...if its connecting to the same database fine when i test it from my local machine, why will it not work when i test it from my hosted server? thanks
I'm having a real strange experience when grabbing the connectionstring property from the web.config. Let me explain: The following code works fine:========================================================================= SqlConnection connection = new SqlConnection("server=dbserver;database=dbdatabase;user id=userID;password=Password"); However, the following code generates an error - "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)"========================================================================= string strDbConnection = ConfigurationManager.ConnectionStrings["dbConnection"].ConnectionString; SqlConnection connection = new SqlConnection(strDbConnection); Web.Config Code===============================<connectionStrings> <add name="dbConnection" connectionString="server=dbserver;database=dbdatabase;user id=userID;password=Password" providerName="System.Data.SqlClient"/> </connectionStrings> I have no idea why this is generating an error when I just simply assign the connectionstring property from the web.config to a local variable. I mean, it works when I use the connection string hard coded. Does anyone know why this could be happening? Thanks.
hi there;well i have a problem after i deployed my wep application to the server(hosting). the point here that the application (as i and the hosting company think) is trying to connect to local sql server!. there is no connection string that is pointed to local sql serevr. i used a dataset.xsd on the application for the tables on database, any configuration on the tables adapters shows that they are connected to remote sql server and there is nothing wrong. when i debug the application locally using the remote sql server, the application runs well and retrieve data from the hosting server. but when i deploy the application on server i get the this error;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) [SqlException (0x80131904): 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)] System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +800131 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +186 System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject) +737554 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +114 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +421 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +181 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +173 System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +133 System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup) +27 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +47 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105 System.Data.SqlClient.SqlConnection.Open() +111 System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString) +68[HttpException (0x80004005): Unable to connect to SQL Server database.] System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString) +124 System.Web.Management.SqlServices.SetupApplicationServices(String server, String user, String password, Boolean trusted, String connectionString, String database, String dbFileName, SqlFeatures features, Boolean install) +86 System.Web.Management.SqlServices.Install(String database, String dbFileName, String connectionString) +25 System.Web.DataAccess.SqlConnectionHelper.CreateMdfFile(String fullFileName, String dataDir, String connectionString) +397 so i have no idea what the problem it could be but i've a little doubts that the problem could be from the dataset.xsd!!!thanks in adavance.
I have been fixing this error many days but there is no result. The ways I tried so many that I can't remember.OS: Vista 64bit SP1.Visual studio 2008Sql server 2005all firewall are off. One key point, my app run very well in windows server 2003 pc. Error Detail 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) body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px} H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red } H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon } pre {font-family:"Lucida Console";font-size: .9em} .marker {font-weight: bold; color: black;text-decoration: none;} .version {color: gray;} .error {margin-bottom: 10px;} .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; }
Server Error in '/Demo on lionking-hp' Application.
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) Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: 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)Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
[SqlException (0x80131904): 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)] System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +800131 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +186 System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject) +737554 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +114 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +381 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +181 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +173 System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +133 System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +30 System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +424 System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66 System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +494 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105 System.Data.SqlClient.SqlConnection.Open() +111 System.Web.DataAccess.SqlConnectionHolder.Open(HttpContext context, Boolean revertImpersonate) +84 System.Web.DataAccess.SqlConnectionHelper.GetConnection(String connectionString, Boolean revertImpersonation) +197 System.Web.UI.WebControls.WebParts.SqlPersonalizationProvider.GetConnectionHolder() +16 System.Web.UI.WebControls.WebParts.SqlPersonalizationProvider.LoadPersonalizationBlobs(WebPartManager webPartManager, String path, String userName, Byte[]& sharedDataBlob, Byte[]& userDataBlob) +195 System.Web.UI.WebControls.WebParts.PersonalizationProvider.LoadPersonalizationState(WebPartManager webPartManager, Boolean ignoreCurrentUser) +95 System.Web.UI.WebControls.WebParts.WebPartPersonalization.Load() +105 System.Web.UI.WebControls.WebParts.WebPartManager.OnInit(EventArgs e) +497 System.Web.UI.Control.InitRecursive(Control namingContainer) +321 System.Web.UI.Control.InitRecursive(Control namingContainer) +198 System.Web.UI.Control.InitRecursive(Control namingContainer) +198 System.Web.UI.Control.InitRecursive(Control namingContainer) +198 System.Web.UI.Control.InitRecursive(Control namingContainer) +198 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +834
Version Information: Microsoft .NET Framework Version:2.0.50727.1434; ASP.NET Version:2.0.50727.1434
