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error: 26 - Error Locating Server/Instance Specified

Posted By:      Posted Date: September 02, 2010    Points: 0   Category :Sql Server
 
Today I installed a named instance on a SQL 2005 Standard X64 SP3 server running on Windows 2008 R2. From a remote server with SQL Server Management Studio I can connect to the default instance, but when I try to connect to the named instance it returns Cannot connect to <server>\<instance> A network-related or instance-specific error occurred while established a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server). Locally I can connect to both instances. Below is the output of portqry.exe. C:\Temp\PortQryV2>PortQry.exe -n <server> -p tcp -e 1433 Querying target system called:  <server> Attempting to resolve name to IP address... Name resolved to <ip> querying... TCP port 1433 (ms-sql-s service): LISTENING C:\Temp\PortQryV2>PortQry.exe -n <server> -p udp -e 1434 Querying target system called:  <server> Attempting to resolve name to IP address... Name resolved to <ip> querying... UDP port 1434 (ms-sql-m service): LISTENING or FILTERED Sending SQL Server query to UDP port 1434... UDP port 1434 (ms-sql-m service): FILTERED The SQL server, agent, and browser services are running.


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Error: 26 Error Locating Server/Instance Specified

  
hi All   i am Facing a problem to connect SQL Server 2008 Express on Local Server when i connect through below Connection String return @"Data Source=MAINSERVER\SQLEXPRESS;Initial Catalog=AccountMenagmenta;Integrated Security=SSPI"; i am facing a Error Error is "A Network - related or instance-specific error occurred while establishing a connection to SQL Server. The Server was not found or was not accessible verify that the instance name is correct and that SQL Server is configured to allow remote connections. (Provider: SQL Network interface, error: 26 error locating server/Instance specified)   any help me to this shotout Regard!   Hitesh Patel

Damn this (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)

  

 

Well my problem is this error message Message="A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)"

 

but :

 

-can't connect to SqlServer Express 2005 on my network server from my application while ITS RUNNING. What I mean is that when I use Server Explorer Window on VS2008 every thing is fine (I can even insert and modify data from server explorer), in fact, when I use Datatables and I choose to preview data through TableAdapters (Design Time) I get data, and also can run the queries from there directly to the data base, but when I'm debbugin the application I get this error.

 

-when I run Sql Server Management Studio, its also fine, even though I can't see the Sql instance on the server (or any of my partners machine) when I try to browse them. But if I type the server path (servername\instancename) everything is OK.

 

-I know the problem is not the connection string 'cause mya partners nd I use the sa

Adding named instance of SQL Server 2005 failed - "Error Locating Server/Instance Specified"

  

We are trying to add a named instance to our Windows 2003 R2 x64 SP1/SQL Server 2005 SP3 server.  It has been running for about 3 years now with a single (default) instance.  When trying to add a named instance, it fails when it gets to the point where it is Updating System Databases - "SQL Server Setup could not connect to the database service for server configuration.  The error was:[Microsoft][SQL Native Client]SQL Network Interfaces: Error Locating Server/Instance Specified [xFFFFFFFF]. Refer to server error logs..."  We are using the local service account for both the default and new named instance.  Allow Remote Connections to This Server is enabled on the default instance. 

In Services, the new SQL Server service has started, but I cannot start the SQL Server Agent - it says it started and then stopped.  I cannot access the instance with SMS.  I rebooted the server and tried the process again with identical results.  I have successfully added a new instance to my test SQL Server using the same install files. Can anyone shed some light in this issue?  Thanks.


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

  

Hi

I am receiving an intermittent error as described in the thread title. I have checked several other threads and the commons solutions seem to be...

check the SQL browser service is running

check the spelling of the instance name

check that the correct UDP port is open on the firewall

All of the above are ok in my case but where my case differs is that the error is intermittent - restarting the server solves the problem but sooner or later, it reocurrs. This specificaly relates to an asp.net application - even when I start getting the error, the web app runs fine over the network but running it in debug or testing / creating connection strings gives error 26. I am all out of ideas with this and it's really not convenient to shut down the server in the middle of a working day. I intended to include the full error text at the end of this question but in the time it has taken me to type this, it has started working again (what the ____!!??!). I am running SQL Server 2008 Express with Visual Studio 2010. Any help would be greatly appreciated.

Regards

Steve

 Update: full error text below...

Server Error in '/' Application.
----------------------------------------------------------

Error Locating Server Instance Specified

  

Hi I am getting the error

SQLState = 08001, NativeError = -1
Error = [Microsoft][SQL Native Client]SQL Network Interfaces: Error Locating Ser
ver/Instance Specified [xFFFFFFFF].
SQLState = 08001, NativeError = -1
Error = [Microsoft][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.
SQLState = S1T00, NativeError = 0
Error = [Microsoft][SQL Native Client]Login timeout expired

when running

D:\MyFolder>bcp ACME_POS.dbo.Employees in Employees.dat -f Employees-n..xml -T -S Localhost\SQLExpress

now i enabled all the steps for allowing remote connections using SQL server surface area configuration.. I enabled the browser and restarted the service...

I think there is a problem with Localhost\SQLExpress or should it be localhost\MSSQLEXPRESS how do i know if its MSSQLEXPRESS or SQLEXPRESS I am using SQL server 2005


A candle loses nothing by lighting another candle.

A network-related or instance-specific error occurred while establishing a connection to SQL Server.

  
I know what the problem is. I am just not sure how to fix it. I get the error below when I have this: < roleManager enabled="true" />  It works fine when I set rolemanager = false but I need to use membership roles.   my connection strings are:  <connectionStrings> <add name="ConnMSSQLASP" connectionString="Data Source=MISFS;Initial Catalog=ASPNetDB;User Id=----;Password=-----;" providerName="System.Data.SqlClient"/> <add name="DisasterRecoveryConnectionString" connectionString="Data Source=MISFS;Initial Catalog=ASPNetDB;User Id=----;Password=----" providerName="System.Data.SqlClient"/> </connectionStrings>    Can someone help me with this? ERROR Below: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to 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 s

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A network-related or instance-specific error occurred while establishing a connection to SQL Server

  
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A network-related or instance-specific error occurred while establishing a connection to SQL Server

  

I just opened the project. Yesterday everything worked fine. It does not work any link database.
Today I open the project and displays:

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to 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.

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Source Error:

A network-related or instance-specific error occurred while establishing a connection to SQL Server

  

Hi,

I've created a small website with a simple sqlite database using vwd 2010 .net 4. In dev and test envionments everything works fine, however when i promote to my hosting provider i receive the following error:

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)

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Server Error in '/' Application.

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)

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Hi,

I am trying to create a Prepared Instance of SQL Server 2008 R2 using an install that is Slipstreamed to include SP1. I followed Option 1 as described here http://msdn.microsoft.com/en-us/library/dd638062.aspx and then was creating the Stand-Alone Prepared Instance as described here http://msdn.microsoft.com/en-us/library/ee210664.aspx. The System Configuration Checker passed with no errors, and then I hit this error:

SQL Server Setup has encountered the following error:

The element 'Package' in namespace 'http://www.microsoft.com/sql/slp/Package.xsd' has invalid child element 'Rules' in namespace 'http://www.microsoft.com/sql/slp/Package.xsd'. List of possible elements expected: 'Properties, Datastore, Extensions, MsiPatches, RuleGroups, Sequences' in namespace 'http://www.microsoft.com/sql/slp/Package.xsd' as well as any element in namespace '##other'.

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SS2k8 R2 instalaltion error - The following error has occurred: Locating the SQL Server Browser ser

  

Dear all we have come across the following error during the R2 installation.

hope somebody would help to get out of this.

regards

 

OS - Win XP SP2

The error message copied from the window is as follows.

---------------------------------------------------

TITLE: Microsoft SQL Server 2008 R2 Setup
------------------------------

The following error has occurred:

Locating the SQL Server Browser service component failed with Windows Installer return code '-1'. The component ID: '{2E86FD41-C179-456E-8E6A-5157ED427228}'.

Click 'Retry' to retry the failed action, or click 'Cancel' to cancel this action and continue setup.

For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft+SQL+Server&EvtSrc=setup.rll&EvtID=50000&ProdVer=10.50.1600.1&EvtType=0x9C7EEFF1%25400x658E7128%25401222%254052007

------------------------------
BUTTONS:

&Retry
Cancel
------------------------------

 

The latter part of the log entry as per the C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20100514_180226\Detail.txt is as follows.

2010-05-14 18:31:02 Slp: ----------------------------------------------------------------------
2010-05-14 18:31:02 Slp: Running Actio

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