SQL Network Interfaces, Error: 26
May 8, 2008
Developed a website using VS.net 05 which connects to a SQL 2005 server for its data. When I ran the site in VS for testing it works correctly. After I used the copy utility and placed the site files on our web server (seperate from our SQL server) and navigated to the site recieved the error.
Checked and verified that a data connection can be made from the web server to the SQL server
Verified that the HTML connection string was correct in the asp files.
Verified that SQL Server Browser was running (had to start it)
Verified that IIS had NP and TCP/IP enabled.
It would appear that the problem still resides in the application as a data connection could be made from the web server to the SQL server but as this is my first web app launch am wondering if I am missing something else.
Thanks,
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Jul 26, 2006
I created a web Appplication using Visual Web Developer but when a placed the application in the ftp and I tried to register appeared this 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 have made some changes in the web.conf file but I still got the same message, Please can you help with this.
Thanks in advance...!
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Sep 22, 2007
My hosting company 1and1 doesn't allow remote connection, is there a string that I can put into my web.config file to get around that? I have tried changing ports 1433 to 1434 etc but nothing seems to work. Please help.....
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Mar 4, 2008
Hi,
I have deployed my ASP .NET 2.0 app (with a SQL Server Express 2005 database located in the App_Data folder) to my production (shared hosting) server. The issue I am having is SQL Network Interfaces error as described at this URL:
How to fix SQL Network Interfaces, error: 26
http://aquesthosting.com/HowTo/Sql2005/SQLError26.aspx
After requesting the above resolution, my hosting company said:
---------------------
The raw data for the database (.mdf file) will not generate the desired results. This database will need to be restored on the SQL server to get the desired and correct results. You will have to upload the backup of the database in order to restore the database on the SQL server.
---------------------
I have never deployed an application with sql server express before, but I was under the impression that I would not have to restore a copy of the database on the server. I have read the post on SQL Server Express and Hosting (http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2893587&SiteID=1) and see that it is not recommended in a shared hosting environment, but does this mean it won€™t work? This is a really small site where a full-blown sql server db would be overkill.
My question is: is what my hosting company stated true, or are they able to resolve the issue by following the steps found in €œHow to fix SQL Network Interfaces, error: 26€? article?
Mike
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Nov 27, 2007
I am creating my first .net site. You can see what I've got so far at www.palmbeachatpickwick.com. It's hosted on GoDaddy and I am using Visual Web Developer and SS2005Express to develop. Trying to get the membership piece working, and I think I am about half way there, but hit a wall. The db connection works insofar as you can join the site and the new user record is successfully added to the db. The confirmation email is successful. The part that's broken which generates the error: 26 message is the page redirect after clicking on "continue". I also get this error when trying to login. Both my login.aspx and join.aspx pages redirect onsubmit to Default.aspx as follows:
After creating an account and clicking continue: ContinueDestinationPageUrl="~/Default.aspx" After logging in: DestinationPageUrl="~/Default.aspx"
There's just a few lines of text on the default page. My master page (used by default.aspx) only has a sitemap data source. No sql data sources specified. So not sure why I am getting a sql error.
FYI, I've posted the code from my web.config and master page file (minus the xml declaration and connection string username and password) here:http://www.palmbeachatpickwick.com/PalmBeach/webconfig.txt
Any insight would be greatly appreciated.
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Jan 17, 2006
Hello All,
We are migrating from ASP.Net 1.1 to 2.0 and have built a new site with the 2.0 membership controls (Login, etc). We're using VS2005/SQL Server 2005. All works well from the development site but once it is deployed from our local machine to our intranet development server, the following error is encountered after the user types in a valid username/password and clicks the Login button (on the Login control on the Login.aspx page):
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)
Our web.config (for testing purposes only):
<?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 xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<appSettings/>
<connectionStrings>
<add name="MyLocalSQLServer" connectionString="Initial Catalog=aspnetdb;data source=localhost;Integrated Security=SSPI;"/>
</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="Forms">
<forms name="SqlAuthCookie" timeout="10"/>
</authentication>
<authorization>
<deny users="?"/>
</authorization>
<membership defaultProvider="MySqlMembershipProvider" >
<providers>
<clear/>
<add name="MySqlMembershipProvider"
connectionStringName="LocalSQLServer"
applicationName="FormsAuthSql"
type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
enablePasswordReset="true"
requiresQuestionAndAnswer="true"
requiresUniqueEmail="false"
passwordFormat="Clear"
minRequiredNonalphanumericCharacters="0"
minRequiredPasswordLength="3"
/>
</providers>
</membership>
<!--
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>
-->
<customErrors mode="Off"/>
</system.web>
</configuration>
Any suggestions will be greatly appreciated!
Troy
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Apr 3, 2008
Hello i am writing a console application . I am using VS 05 professional & Sql server express.
Here is the code with no syntatical errors:
using System;
using System.Data;
using System.Data.SqlClient;
namespace Chapter6
{
class CallSp1
{
static void Main()
{
// create connection
SqlConnection conn = new SqlConnection
(@"server = .centrinosqlexpress; integrated security = true;
database = northwind");
try
{
// open connection
conn.Open();
// create command
SqlCommand cmd = conn.CreateCommand();// specify stored procedure to execute
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "sp_select_employees_details";
// execute command
SqlDataReader rdr = cmd.ExecuteReader();
// process the result set
while (rdr.Read())
{
Console.WriteLine("{0} {1} {2}",rdr[0].ToString().PadRight(5),rdr[1].ToString(),rdr[2].ToString());
}
rdr.Close();
}
catch (SqlException ex)
{
Console.WriteLine(ex.ToString());
}
finally
{
conn.Close();
}
}
}
}
The error i get in the dos window is:
Error: System.Data.SqlClient.SqlException: An error has occurred while establish
ing a connection to the server. When connecting to SQL Server 2005, this failur
e 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 L
ocating Server/Instance Specified)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception
, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObj
ect stateObj)
at System.Data.SqlClient.TdsParser.Connect(Boolean& useFailoverPartner, Boole
an& failoverDemandDone, String host, String failoverPartner, String protocol, Sq
lInternalConnectionTds connHandler, Int64 timerExpire, Boolean encrypt, Boolean
trustServerCert, Boolean integratedSecurity, SqlConnection owningObject, Boolean
aliasLookup)
at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnecti
on owningObject, SqlConnectionString connectionOptions, String newPassword, Bool
ean redirectedUserInstance)
at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdent
ity identity, SqlConnectionString connectionOptions, Object providerInfo, String
newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOp
tions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection
owningConnection)
at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConn
ection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owning
Object)
at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection o
wningObject)
at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection ownin
gObject)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection ow
ningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection ou
terConnection, DbConnectionFactory connectionFactory)
at System.Data.SqlClient.SqlConnection.Open()
at Chapter10.ConnectionSql.Main(String[] args) in D:PROG_DEVVb.NET_devCons
oleAppconnectVerifyAppconnectVerifyAppProgram.cs:line 18
Connection closed.
I have enabled everything in SQL server config manager.
I still get the error!
Can anybody help
Gino
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Dec 14, 2007
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.
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Jun 20, 2006
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:
[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) +735091 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 System.Web.DataAccess.SqlConnectionHolder.Open(HttpContext context, Boolean revertImpersonate) +84 System.Web.DataAccess.SqlConnectionHelper.GetConnection(String connectionString, Boolean revertImpersonation) +197 System.Web.Security.SqlMembershipProvider.GetPasswordWithFormat(String username, Boolean updateLastLoginActivityDate, Int32& status, String& password, Int32& passwordFormat, String& passwordSalt, Int32& failedPasswordAttemptCount, Int32& failedPasswordAnswerAttemptCount, Boolean& isApproved, DateTime& lastLoginDate, DateTime& lastActivityDate) +1121 System.Web.Security.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved, String& salt, Int32& passwordFormat) +105 System.Web.Security.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved) +42 System.Web.Security.SqlMembershipProvider.ValidateUser(String username, String password) +83 System.Web.UI.WebControls.Login.OnAuthenticate(AuthenticateEventArgs e) +160 System.Web.UI.WebControls.Login.AttemptLogin() +105 System.Web.UI.WebControls.Login.OnBubbleEvent(Object source, EventArgs e) +99 System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +35 System.Web.UI.WebControls.Button.OnCommand(CommandEventArgs e) +115 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +163 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102
Version Information: Microsoft .NET Framework Version:2.0.50727.42;
ASP.NET Version:2.0.50727.42
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Mar 21, 2008
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
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Apr 15, 2008
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:
[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.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.Security.SqlMembershipProvider.GetPasswordWithFormat(String username, Boolean updateLastLoginActivityDate, Int32& status, String& password, Int32& passwordFormat, String& passwordSalt, Int32& failedPasswordAttemptCount, Int32& failedPasswordAnswerAttemptCount, Boolean& isApproved, DateTime& lastLoginDate, DateTime& lastActivityDate) +1121
System.Web.Security.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved, String& salt, Int32& passwordFormat) +105
System.Web.Security.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved) +42
System.Web.Security.SqlMembershipProvider.ValidateUser(String username, String password) +83
System.Web.UI.WebControls.Login.OnAuthenticate(AuthenticateEventArgs e) +160
System.Web.UI.WebControls.Login.AttemptLogin() +105
System.Web.UI.WebControls.Login.OnBubbleEvent(Object source, EventArgs e) +99
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +35
System.Web.UI.WebControls.Button.OnCommand(CommandEventArgs e) +115
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +163
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1746
Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433
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Apr 30, 2008
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
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May 15, 2008
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.
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Nov 17, 2005
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
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Mar 24, 2006
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
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Oct 31, 2007
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
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Jul 13, 2007
Hi,
I have been stuck up with this error.
I am using SQL Srver express edition with asp.net 2.0 on windows XP SP2.
When I open the SQL Management studio and execute queries it works fine.
When I exute query in command prompt using SQLCMD -E -S ServernameInstance
It conect with database and I can freely execute queries in command prompt.
I have also tried to connect with Classical ASP 3.0 It also works fine. No error
I have made all changes that u specified in ur article.
But When I try to connect with asp.net. It gives me error.
"provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)"
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.
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Sep 26, 2007
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
"Data Source=MSL-1417762\SQL2000;Initial Catalog=PopulateForeignKeys_MSL_1417762_2_5984;Integrated Security=True;Pooling=False;Asynchronous Processing=true"
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.
Can you please help?
Thanks,
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Jun 12, 2006
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
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Jan 30, 2008
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>
Thanks for your help.
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Jun 12, 2007
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?
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Apr 9, 2008
hi
i am working with Asp.net2.0,Sqlserver2000.
i uploaded my developed application to the webserver.
all webpages are opening..bt when i try to interact with database it is raising error as following..
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: 25 - Connection string is not valid) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
i set Enamble to namedPipes,Tcp/IP
i set Remote connection to enable
my web.config looks like this..
<?xml version="1.0"?>
<configuration> <appSettings>
<add key="cn" value="User ID=redot;Password=redot;Data Source=216.185.43.148:1423;Initial Catalog=redot" /> <!--<remove key="LocalSqlServer"/> ;ProviderName=System.Data.SqlClient-->
</appSettings> <connectionStrings> <!--<remove name="LocalSqlServer"/>-->
<add name="redotConnectionString" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString1" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString2" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString3" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString4" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString5" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString6" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString7" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString8" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString9" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> <add name="redotConnectionString10" connectionString="Data Source=216.185.43.148:1423;Initial Catalog=redot;User ID=redot;Password=redot" providerName="System.Data.SqlClient" /> </connectionStrings> <system.web>
<sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data source=216.185.43.148:1423;User ID=redot;Password=redot;Trusted_Connection=True" cookieless="false" timeout="60" />
<compilation debug="true" /> <!-- The <authentication> section enables configuration of the security authentication mode used by ASP.NET to identify an incoming user. -->
<customErrors mode="Off"> <error statusCode="404" redirect="filenotfound.htm" /> </customErrors>
</system.web> <system.net>
<mailSettings>
<smtp> <network host="216.185.54.55" port="25" /> </smtp> </mailSettings>
</system.net></configuration>
i will be very thankful ,if anyone help me to resolve this problem..
pls..its urgent for me
Thanks& Regards
Shobha
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Apr 29, 2006
I have SQL 2005 standard edition (64) installed on Win 2003 (x64) as the database server. (dbserver machine)
Despite setting up:
Remote option under surface configurator,
TCP settings under configuration wizard,
No firewall,
I am still getting the same message when I try to connect from the application server using the SQL manager. I can connect to the server on the dbserver machine but not remotely.
I have read through the threads in the forum and applied most recommendations without avail. Please help.
Thanks
Haluk Tezcan
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Aug 16, 2005
Hi,I am getting the following error (When i am trying to update the column thru windows service) Please let me know the solution for the following.The following error is comming only when i set CommandTimeout to infinity (Commandtimeout=0).General network error. Check your network documentation. Number 11 Procedure ConnectionRead (recv()). Class 20 State 0 Source .Net SqlClient Data Provider Server Line number 0 Thanks and Best RegardsNagaraju A
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Sep 30, 2004
Hello all,
We have a Windows 2003 Web Edition server serving a site through IIS. It connects to a Windows 2003 Standard Edition server running SQL 2000 SP3a.
This site receives the following error as seen in the topic:
[DBNETLIB][ConnectionRead (recv()).]General network error. Check your network documentation.
We've configured the server network utility to only allow TCP/IP connections. The connection string for the site is as follows:
<%
' FileName="Connection_ado_conn_string.htm"
' Type="ADO"
' HTTP="false"
' Catalog=""
' Schema=""
MM_connSpankMSSQL_STRING = "Provider=sqloledb;Data Source=SERVER_IP,1433;Network Library=DBMSSOCN;Initial Catalog=ourmaindb_1;User ID=ourmaindb_1;Password=hotcookies;"
%>
Any ideas or tips on solving this issue? We've noticed it is due to larger queries as smaller ones do work with no problems.
The servers are behind a BSD box running iptables, has 1433,1434 along with standard web ports wide open. Anything outbound is allowed.
Some further testing via ODBC on the IIS server improved things. No more connection pooling for the SQL Server driver allows for 1/3 of the query to run. Still 2/3s of it doesn't show up, and that general network error message appears.
Should have 330 rows if it works right.
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May 19, 2004
Hi
While running a DTS, many times the error message: "[DBNETLIB][ConnetionWrite (WrapperWrite()).]General network error. Check your network documentation." appears.
Does somebody knows why?
I am running the DTS from a computer (not the server where the DTS is stored) and it is connected without any problem when this happens.
Thanks!!
Regards
Lautaro - Argentina.
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Oct 4, 2007
Hi Every one,
I am using .Net 1.1 for my web application.
And my database server is SQL Server 2005.
My application is running fine, as i can login to it and also able to view pages. But when i open Order management(having 3K records) its give me error,
General Network Error. Check your network documentation
I have also searched many articles and tried following solutions but nothing working
- connectiontimeout = 0, max pool size = 7500/100, pooling = false
- SSL disabling enforce security false as mentioned in microsoft kb article.
And there's nothing any issue with hardware/firewall as my application's login and other forms are working fine(which use same database with same connection string)
Can any one please help me to solve this error?
With Regards,
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May 26, 2007
Hi We have a written a error log in Global.asax. which capture below mentioned error in the prodcution server. Same applications is working fine in some locations and some loactions we are getting the error.Any body knows why this error is occurs.Any body knows why this error is occurs. Error Message:General network error. Check your network documentation.Stack Trace: at System.Data.SqlClient.SqlInternalConnection.OpenAndLogin() at System.Data.SqlClient.SqlInternalConnection..ctor(SqlConnection connection, SqlConnectionString connectionOptions) at System.Data.SqlClient.SqlConnection.Open() at datalayer.sqldb.Execute(String ProcedureName, SqlParameter[] Parameters) at lms.User.GetUserDetails(String strUserid)ITs at LMS.Login.w_btn_Login_Click(Object sender, EventArgs e) at System.Web.UI.WebControls.Button.OnClick(EventArgs e) at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
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Oct 4, 2007
Hi,I am using .Net 1.1 for my web application.And my database server is SQL Server 2005. My application is running fine, as i can login to it and also able to view pages. But when i open Order management(having 3K records) its give me error,General Network Error. Check your network documentation I have also searched many articles and tried following solutions but nothing working- connectiontimeout = 0, max pool size = 7500/100, pooling = false- SSL disabling enforce security false as mentioned in microsoft kb article. And there's nothing any issue with hardware/firewall as my application's login and other forms are working fine(which use same database with same connection string) Can any one please help me to solve this error?
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Feb 8, 2004
When I try to update the site setting, I get this Error and I don't know how to fix.
Server Error in '/DotNetNuke' Application.
--------------------------------------------------------------------------------
General network error. Check your network documentation.
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: General network error. Check your network documentation.
Source Error:
Line 281:
Line 282: myConnection.Open()
Line 283: myCommand.ExecuteNonQuery()
Line 284: myConnection.Close()
Line 285: End Sub
Source File: C:DotNetNukeComponentsAdminDB.vb Line: 283
Stack Trace:
[SqlException: General network error. Check your network documentation.]
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) +721
System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +196
DotNetNuke.AdminDB.UpdatePortalInfo(Int32 PortalId, String PortalName, String PortalAlias, String LogoFile, String FooterText, Int32 UserRegistration, Int32 BannerAdvertising, String Currency, Int32 AdministratorId, String ExpiryDate, Double HostFee, Double HostSpace, String PaymentProcessor, String ProcessorUserId, String ProcessorPassword, String Description, String KeyWords, String BackgroundFile, Int32 SiteLogHistory) in C:DotNetNukeComponentsAdminDB.vb:283
DotNetNuke.SiteSettings.Update_Click(Object sender, EventArgs e) in C:DotNetNukeadminPortalSiteSettings.ascx.vb:287
System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e)
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
System.Web.UI.Page.ProcessRequestMain()
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
Please Help!
Thank you,
dlouanis
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Jan 9, 2006
I use sqlclient to connect directly from my mobile 5 pocketpc to a sql server 2005 database on my desktop.
I use a sqldatareader to traverse the results of a query that delivers 2 fields: (1) the filespec, and (2) the image field.
I use a filestream with a binary writer to write the contents of the image data to the pocketpc's storage card.
I have a test table with 10 images, not one more than 4 MB. I cannot complete a test run prior to receiving the general network error.
The pocketPC is connected via activesync to the desktop, and I connect to the database with:
Integrated Security=false;
user id=sa
password=admin.
Any help with this strange error would be greatly appreciated.
Wil
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Oct 11, 2006
Hi I get a "General Network Error Check network documentation" error sometimes, but its only while insert or update statements are fired while selects keep working perfectly.
The Error details are as follows:
General network error. Check your network documentation.
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: General network error. Check your network documentation.
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: General network error. Check your network documentation.]
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream)
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Sep 21, 2006
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!
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