DB/Reporting :: Error: 26 - Error Locating Server/Instance Specified

Jan 25, 2011

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) error: 26 - Error Locating Server/Instance Specified.

This error is doing my head in.I have a client running Windows XP SP3 logged into a domain. It is running MS VB 2010 Express to access the server.I have a Server called dataserver3 which from the client, I can do a start, run "\Dataserver3" and it comes up and yes I can browse to the Test.mdf file, which is a new database that was created using MS SQL Server 2008 R2 Standard edition.

[Code]...

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VS 2010 Error 26 Locating Server / Instance Specified

Feb 12, 2011

When I attempt to add a Service-based Database in VS2010, when starting a new project in VS2010, I receive the following error immediately after clicking "Add" when the Service-based Database is selected.A network-related or instance-specific error occured while establishing a connection to SQL Server. The server was not found or is not accesible. Verify that the instance name is correct and that SQL Server name is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified.)I've googled this problem and found this topic (url...), which wasn't able to help me. I'm still finding additional topics to troubleshoot with as well..

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Error Locating Server - Vb Sql Connection String

Mar 8, 2012

I get this error when I try to connect to my database. I used the same string provided in the database explorer "Connection String"

I do not have a password on the database.

This is a local database if that makes a difference

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A Network-related Or Instance-specific Error Occurred While Establishing A Connection To SQL Server?

Aug 23, 2011

I am working on a project using VS2010 SQL2008 and I saw an ODD behaviour , First let me tell you that the app runs without any problem in my developing pc (Windows Xp sp3 32bit)But when I was trying the application in another pc (Windows 7 32bit)I got this exception: A network-related or instance-specific error occured while establishing a connection to SQL server.The server was not found or was not accessible.Verfiy that the instance name is correct and that SQl server is configured to allow remote connections.

Now what is weird in this exception; Is when the application reaches the DataAdpater.Fill(dataset) line I got this exception but when the app reaches the DataAdpter.Insert(....) It runs without any problem .

And what is more weird is that I noticed that the dataset that is used in the previous insert procedure can later be filled with dataAdapter.Fill(...) procedure which it was giving me an exception before .

I tried these things as a solution:

1)Checked SQlBrowser running..

2)No aliases to Sql server at all to remove...

3)remote area connection--OK

4)TCP and UDP port 1433,1434 exception in firewall

5)Unistalled my only antivirus Norton

6)Added Tcp/IP ports in Sql protocols

7)My connection String is : onnectionString="Data Source=ALISQLEXPRESS;Initial Catalog=PALMSDATABASE;Integrated Security=True"

8)Also tried using Sql Server authentication (user Id and password)

what is the difference between fill and insert? My app. runs smoothly on the original pc ,What should I do?

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Asp.net - A Network-related Or Instance-specific Error Occurred While Establishing A Connection To SQL Server?

Jan 19, 2011

I HOST MY ASP.NET WEBSITE ON WEBSERVER ..But after upload when i try to access my site ...

[URL]

Then following error occurs ....

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)

i have changed my connectionstring in web.config file and all webpages to :

<connectionStrings>
<remove name="ConnectionString"/>
<add name="ConnectionString" connectionString="Data Source=69.16.253.19,1433; Network Library=DBMSSOCN; Initial Catalog=database;

[code]....

...before publishing and uploading my website to webserver ...I m confused the problem is from my local computer or the webserver ....and how to fix this error ?

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VB Express 2010 : A Network-related Or Instance-specific Error Occurred While Establishing To Sql Server

Jun 1, 2010

i downloaded samples of vb 2010, i tried to run Create DB (Data Samples) but i'm receiving this error. I have MS SQL Server 2008 installed.a network-related or instance-specific error occurred while establishing to sql server. the server was not found or was not accessible.Verify that the instances name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error:40 - Could not open a connection to SQL Server)

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VS 2008 - A Network-related Or Instance-specific Error Occurred While Establishing A Connection To SQL Server

Nov 18, 2009

Error message receiving 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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) The project is written in VB.Net 2008. Production server uses SQL 2008, Dev Server uses SQL 2000. The application has been built and published.

Prod Connection String: strCN = "server=SGMAGNCPQ03.;Initial Catalog=APO_Tax;Integrated Security=True"

Dev Connection String: strCN = "server=S04423711940995.;Initial Catalog=APO_Tax;Integrated Security=True"

The Problem: When I change the connect string from dev back to prod and try to run my app, I get the above error message. If I reboot everything works fine but if I switch the connect string from prod to dev and try to go back to prod, I'm back to the same problem.

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Asp.net - Get The Error Page : Server Error In '/' Application. HTTP Error 403 - Forbidden?

Aug 9, 2011

I'm using Visual Studio Development Server (Visual Basic 2010) and it works fine. Now I've enabled NTLM Authorization because I want to test the website using a different user account. Now when I try to access the website I always get the following error page:

Server Error in '/' Application.

HTTP Error 403 - Forbidden.

Version Information: ASP.NET Development Server 10.0.0.0 .I'm using a test account which is a normal user within our domain. I've already set the access rights in my project folder to Full Access for this user but it does not help.

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Asp.net - Server Error Asks For Error Specific Page Instead Of Error Details?

Mar 6, 2012

When I deployed my project on a server, in certain circumstances, I get an error page that indicates I should create a custom error page. I was wondering how exactly I would implement this custom error page the server asks for to give me a precise and helpful message or preferably, how I would get the error to just display on the main page?This is the error message I got below

Runtime Error

Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.

Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".

<!-- Web.Config Configuration File -->
<configuration>
<system.web>

[code]....

Notes: The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the application's <customErrors> configuration tag to point to a custom error page URL.

<!-- Web.Config Configuration File -->
<configuration>
<system.web>

[code]....

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VS 2010 The Remote Server Returned An Error: (500) Internal Server Error?

Dec 5, 2010

posted again but this time its regarding both the webclient and the web reuqest giving me this error :S

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Event Handler Code Cause A Object Reference Not Set To An Instance Of An Object. Error (only Present On Live Server, Ok On Dev)?

Mar 4, 2010

Here is the code for the button click event;

Protected Sub CompetenciesButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles CompetenciesButton.Click
Dim con As String = WebConfigurationManager.ConnectionStrings("foo").ToString()

[code].....

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An Error Occurred Creating The Form. See Exception.InnerException For Details. The Error Is: Object Reference Not Set To An Instance Of An Object?

Apr 30, 2009

WTF, here's my code...

Public Class Form1
Dim BIT01 As Integer = BIT_01.Text
Dim Value As Integer = TB_OutPut.Text

[code].....

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Jun 1, 2010

trying to get my hands wet on vs 2010 and i downloaded samples from ms site but when i tried to run some of the DB samples i received this sql 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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) any ideas how to get around on this?

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I am running my application and at random times when it is unable to connect to the database I get an error saying "A Transport-level error has occurred when receiving results from the server. (provider, TCP Provider, error: 0- The specified network name is no longer available.) How can I stop this pop up from coming up? It comes up every once in a while and I want to disable that.

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Sep 2, 2009

I am trying to upload a file to Mainframe machine from my VB.net application. I am getting the following error.The remote server returned an error: (501) Syntax error in parameters or arguments

[code]...

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Error #-2147012721: A Security Error Ocurred Source: Msxml3.dll Windows Server 2008

Jul 13, 2010

the next issue, that is only shown when the server is a Windows server 2008 machine , this is the information that I've found

[Code]...

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Using .net 2005 - FtpWebRequest For ListDirectory Always Gets 550 Error The Remote Server Returned An Error: (550) File Unavailable

Jan 11, 2011

Using vb.net 2005 - FtpWebRequest for ListDirectory always gets 550 error The remote server returned an error: (550) File unavailable (e.g., file not found, no access).

On both FTPListDirRequest.Method = System.Net.WebRequestMethods.Ftp.ListDirectory

FTPListDirRequest.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails

[Code]...

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IDE :: Error - The Remote Server Returned An Error: (406) Not Acceptable

Jun 17, 2010

When I tried to read the data of a http link using VB.net, an error occur. The error is:The remote server returned an error: (406) Not Acceptable.This error is only occur for some links.

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Jun 4, 2010

I'm connecting to my mysql server using ODBC in vb.net, the database is shared throughout the company because it is used in an accounting program (simply accounting), each user has their own account user/pass to login to the database. I have developped a program that uses the accounting database and combines it with other information, my problem is that at least once a day I get this error when I run my program: "(10061) ERROR [HY000] [MySQL][ODBC 3.51 Driver]Can't connect to MySQL server on"and the error persists for at least 4 hours, for some reason it starts to work again later on in the day.

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Error: "The Remote Server Returned An Error - (407) Proxy Authentification Required"

Nov 20, 2011

I am developing a tool to get all elements of a web page (images, links etc...) and I am having a small problem with the Download button. I click it, and becuase we use a proxy at school no matter what I try it will always throw the error: "The remote server returned an error - (407) Proxy Authentification Required"How do I detect that the user is using a proxyAnd then if so, authenticate with it so that I can download the file?

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VB(A) Error When COM-DLL Tries To Instance NET-DLL Object?

Mar 27, 2012

EXCEL-VBA opens a COM-DLL that -at one place- refers to a class from a another NET-DLL. When the COM-DLL tries to initialize an object from a class (in the NET-DLL), I get an error that the method get_ContentTypeProperties has no implementation. error message "method [...] has no implementation". I never created the method get_ContentTypeProperties, nor is it part of the interface I'm using.When accessing the COM-DLL via anther DLL, to workaround EXCEL-VBA, it works properly.UPDATE: Using a different class from the NET-Dll that implements _Worksheet Interface (not _Workbook Interface like in the original Problem) brings the same error message, but at least i found out that the "not implemented" method (PrintOutEx) being part of the Worksheet Interface from the Microsoft.Office.Tools.Excel Namespace. This interface is used by Visual Studio, with which i am creating my DLLs. But still...my NET-DLL is implementing the _Worksheet-Interface in the Microsoft.Office.Interop.Excel Namespace.

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.net 4.0 - Error When Creating An Instance Of Word

Nov 15, 2010

I am getting an error when I run this app in VS 2010 (it works fine in VS 2008)

[Code]...

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AppDomain Instance Creation Error

Aug 16, 2010

I keep getting a "System.Runtime.Serialization.SerializationException" in my application while loading a not-defined assembly (AKA: Plug-in loading.)Even if I turn Serialization on for that plug-in, then it will fail once again. I've been looking around and couldn't find a good tutorial about it..

So all together: How to load an assembly using AppDomain?

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Creating Instance Of COM Component Error?

May 21, 2010

VS Express 2010 gives me a "Creating an instance of the COM component with CLSID {D70E31AD-2614-49F2-B0FC-ACA781D81F3E} from the IClassFactory failed due to the following error: 8007000e."

Error at this line

Dim acadDoc As New Autodesk.AutoCAD.Interop.AcadDocument

Here is the method call:

Private Sub Process_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Process.Click
Me.DialogResult = System.Windows.Forms.DialogResult.OK

[Code].....

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Instance Giving A Object Reference Error

Nov 11, 2009

I've written a new DAL and BLL, but when I try to create an instance of my class, I get an Object Reference error, is there anything particular I should be looking for? I am fairly new to this concept?

Call is such:Protected Sub btnSignin_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles btnSignin.Click Dim l As New Log()l.Log = "Attempted staff login with username [" & txtUsername.Text & "] and password [" & txtPassword.Text & "]"

[Code]...

Intellisense highlights no problems and if I Build the web site in VS I get a few warnings about schema information in the web.config (unrelated), otherwise no problem.

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Network Related Instance-specific Error

Jun 1, 2010

i am facing a problem that is frustrating i have a VB.NET application that i need to connect to an sql 2005 server .its giving this error when i publish the application "a network related or instance-specific error occured while stablishing a connection to sql server . the server was not found or was not accessible .verify that the instance name is correct and that the sql server is configured to allow remote connections" the pc has windows xp on it i configured my sql to allow remote connections its working on one mashine but not the other ??

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Network-related Or Instance Specific Error

Jun 15, 2009

I got an error message saying "Network-related or instance specific error occured while establishing a connection to SQL server............" when opening a connection in form_load event.Tried restarting computer it worked few a times,but still would get the same message again after sometime.How can i fix this error?.

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VS 2005 Error - Object Reference Not Set As New To An Instance

Aug 26, 2011

The code is shown below:-

Function fnt_db_JDE(ByVal connName As String, ByVal strSQL As String) As DataTable
Dim result As New DataTable
Dim dsSysConfig As New DataSet
Dim xmlPath As String = ini("Root") & "SysConfig.xml"

[code]....

The error is with the connStr = '' line.

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Vs-2010, Object Not Set To An Instance Of A Variable Error

May 10, 2010

Imports System.Data.SqlClient
Public Class form1
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[Code]....

whats wrong with that code i have 2 text fields reference so why obj ref not set?

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I am getting an error saying that I don't have for For, for my Next statment. It looks like it doesn't even finnish the initial compile. What is going on?

Code:...................

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