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POerror: 26 - error locating server/instance specified
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  1. POerror: 26 - error locating server/instance specified
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    copied!<p>This is Arun from Chennai. I have developed my first application in WPF (C#) with VS 2008 &amp; SQL Server 2008. It works fine in my system. After deployment, it wont works in other systems. It shows the following error message.</p> <p>system.data.sqlclient.sqlexception - 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 instance name is correct and sql server is configured to allow remote connections.(provider: sql network interfaces, error: 26 - error locating server/instance specified).</p> <p>I have gone through the google and done the following steps but no use. </p> <p>Server Name : ECARE432\SQLEXPRESS<br> Instance Name : SQLEXPRESS</p> <p>App.Config have:</p> <pre><code>&lt;connectionStrings&gt; &lt;add name="TimeTracker.Properties.Settings.myecareConnectionString" connectionString="Data Source=ECARE432\SQLEXPRESS;Initial Catalog=myecare;Persist Security Info=True;User ID=sa;Password=ecare123@" providerName="System.Data.SqlClient"/&gt; &lt;/connectionStrings&gt; </code></pre> <ol> <li><p>Visual Studio-->Tools-->Options-->Database Tools-->Data Connections--> Changed "SQL Server Instance Name" from "sqlexpress" to blank.</p> <ol> <li><p>Configuration Tools->SQL Server Configuration Manager->SQL Native Client Configration Aliases-> Alias Name -> ECARE432\SQLEXPRESS,1433 Port Number -> 1433 Protocol -> TCP/IP Server Name -> ECARE432\SQLEXPRESS</p></li> <li><p>SQL Server Browser is running in my system.</p></li> <li><p>Server Name is correct. No typo mismatch.</p></li> <li><p>Client machine is able to ping my machine. </p></li> <li><p>TCP 1433 and UDP 1434 Exception added to Firewall. Also Turned off the Firewall in both my system and the client system.</p></li> </ol> <p>Please guide me how to fix this issue.</p></li> </ol>
 

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