C# Sql Connection Error 26
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★★★★★★★★★★★★★★★ SQL Server ConnectivityMay 13, 2007286 0 0 0 Users often see this error message when connection to a SQL Server and don't know where to start to solve the problem. In most forums, people says
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this is because remote connection is not enabled on the server. This is not exactly connect c# to sql server correct. Actually, this error message give customers very specific information and the solution is quite simple. First of all, you get this connect c# to sql server 2012 error message only if you are trying to connect to a SQL Server named instance. For default instance, you never see this. Why? Because even if we failed at this stage (i.e. error locating server/instance specified), we
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will continue to try connect using default values, e.g defaul TCP port 1433, default pipe name for Named Pipes. You may see other error message due to failure later, but not this error message. Every time client makes a connection to SQL Server named instance, we will send a SSRP UDP packet to the server machine UDP port 1434. We need this step to know configuration information of the SQL instance, e.g., protocols enabled,
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TCP port, pipe name etc. Without these information, client does know how to connect the server and it fails with this specified error message. In a word, the reason that we get this error message is the client stack could not receive SSRP response UDP packet from SQL Browser. It's easy to isolate the issue. Here are the steps:1) Make sure your server name is correct, e.g., no typo on the 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]3) Make sure the server machineis reachable, e.g, DNS can be resolve correctly, you are able to ping the server (not always true). 4) Make sure SQL Browser service is running on the server.5) If firewall is enabled on the server, you need to put sqlbrowser.exe and/or UDP port 1434 into exception. Once you are done the steps, you should not see this error message anymore. You may still fail to connect your SQL server, but error message should be different and you have a different issue now. [Update: If it still fails, you may replace serverinstance with tcp:serverinstance and/or np:serverinstance and see if it suc
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about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow sql server error 26 - error locating server/instance specified Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping https://blogs.msdn.microsoft.com/sql_protocols/2007/05/13/sql-network-interfaces-error-26-error-locating-serverinstance-specified/ each other. Join them; it only takes a minute: Sign up SQL Server Compact Edition 4.0: Error: 26 - Error Locating Server/Instance Specified up vote 4 down vote favorite I have been developing a console application (C# / .Net Framework 4.0 / VS2012). I created a SQL Server Compact database (*.sdf) and added a connection string as:
Error Locating Server/Instance" Specified SQL Server Shantanu Gupta SubscribeSubscribedUnsubscribe2222 Loading... Loading... Working... Add to Want to watch this again later? Sign in to add this video to a playlist. Sign in Share More Report Need to report the https://www.youtube.com/watch?v=di3DKZo-3_c video? Sign in to report inappropriate content. Sign in 60,757 views 29 Like this video? Sign in to make your opinion count. Sign in 30 6 Don't like this video? Sign in to make your opinion count. Sign in 7 Loading... Loading... Loading... Rating is available when the video has been rented. This feature is not available right now. Please try again later. Uploaded on Dec 14, sql server 2009Sql Server: Error 26 - Error Locating Server/Instance" Specified SQL ServerDescription along with all the steps followed in this video are explained in the following link.http://www.techpint.com/programming/e... Category Education License Standard YouTube License Show more Show less Loading... Advertisement Autoplay When autoplay is enabled, a suggested video will automatically play next. Up next Agregar y eliminar instancias "error 26 Error al buscar el servidor o instancia especificado" - c# sql connect Duration: 6:26. Tutoriales Hackro 58,608 views 6:26 Allow remote connections to SQL Server Express : How to Video - Duration: 7:36. Sachin Samy 42,899 views 7:36 How to fix SQL Server Error 26 - Duration: 2:33. hamza tamyachte 108,136 views 2:33 Problème de connexion SQL server 2008 ( SQL Error 26 ) - Duration: 2:28. LAMLIH Imad 5,436 views 2:28 How to Enable Remote Connection to SQL Server is a Solution for Error:40 - Duration: 8:51. CREATIVE CREATOR 122,832 views 8:51 Fix Microsoft SQL Error Connect To Server - Duration: 2:45. Mohamad Simo 6,161 views 2:45 Fix error Cannot Connect to Server (SQL Server) - Duration: 1:40. Đức Trần 55,779 views 1:40 How to solve a network-related or instance-specific error in Sql server - Duration: 4:51. Vivek Jaiswal 34,270 views 4:51 M/Docs II Tech Support Video - SQL Error 26 (Local Install) - Duration: 5:38. MDIIVideoTutorials 318 views 5:38 Como Solucionar Problema de Conexion a SQL Server 2008 2012 2014 2016 y todos los que vengan - Duration: 2:53. Franklin Varela 124,200 views 2:53 Configuring SQL Server 2008 Remote Access - Duration: 4:23. William Nsubuga 39,525 views 4:23 changing SQL Server name.flv - Duration: 2:55. solutionsguru 20,250 views 2: