Error Locating Server/instance Sql Server
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★★★★★★★★★★★★★★★ SQL Server ConnectivityMay 13, 2007286 0 0 0 Users often see this error message when connection to sql server network interfaces error locating server instance specified xffffffff a SQL Server and don't know where to start to solve error locating server instance specified sql 2008 r2 the problem. In most forums, people says this is because remote connection is not enabled on sql network interfaces error 26 error locating server instance specified the server. This is not exactly correct. Actually, this error message give customers very specific information and the solution is quite simple. First of all, you get this
Provider Sql Network Interfaces Error 26 Error Locating Server Instance Specified
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 will continue to try connect using default values, e.g defaul TCP port 1433, default pipe name for Named Pipes. error locating server/instance specified sql server 2012 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, 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 Server
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Error 26 In Sql Server 2014
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Error 26 In Sql Server 2008
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn http://stackoverflow.com/questions/13340531/how-to-solve-error-26-error-locating-server-instance-specified-in-production-en more about hiring developers or posting ads with us Stack Overflow 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, https://forums.asp.net/t/1499314.aspx?error+26+Error+Locating+Server+Instance+Specified helping each other. Join them; it only takes a minute: Sign up How to solve Error 26: Error Locating Server/Instance Specified in production environment? up vote 8 down vote favorite 1 I have a strange error in production error locating environment BUT not in develop environment. In my develop environment, with Visual studio 2010, i can connect without problem to Sql Server 2012. When i copy my Windows Form app to others PC in the same network, i get an "Error 26:Error Locating Server/Instance Specified". The same application worked good with an old database instance with Sql Server 2008. I don't know what to check and where to start! EDIT: Another strange behavior is that it error locating server works good if i use a code like this conn.Open() dr = cmd.ExecuteReader() But stop to work if i open a form with a datagridview, a dataset and a BindingSource ! .net sql-server-2012 share|improve this question edited Nov 12 '12 at 9:03 asked Nov 12 '12 at 8:40 stighy 2,3521162115 How about the connection string? Are you referencing localhost or . as the host name? –J. Steen Nov 12 '12 at 8:44 This is my connection string : Data Source=192.168.x.y;Initial Catalog=dbname;User id=username;Password=password –stighy Nov 12 '12 at 8:58 Did you check that the sql server can take connections from other computers? –linkerro Nov 12 '12 at 9:13 Yes, i can connect from others computer, also with that application. Only when i use a form with a datagridview, dataset and bindingsource, i get the error 26 !!!! –stighy Nov 12 '12 at 9:20 Could you show us the full code you're using when you try it with a DataGridView, DataSet and BindingSource? –Sean Nov 15 '12 at 15:52 add a comment| 1 Answer 1 active oldest votes up vote 5 down vote accepted +150 this blog post has detailed information about error 26. From the post: In a word, the reason that we get this error message is the client stack could not receive SSRP response UDP
ASP.NET Community Standup Forums Help Home/ASP.NET Forums/Community/Tips & Tricks/error: 26 - Error Locating Server/Instance Specified error: 26 - Error Locating Server/Instance Specified RSS 5 replies Last post Apr 25, 2016 10:05 AM by JohnsonWelch ‹ Previous Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved Threads Support Options Advanced Search Reply kutting Member 33 Points 49 Posts error: 26 - Error Locating Server/Instance Specified Dec 02, 2009 12:21 AM|kutting|LINK Hi Guys, If you are facing problem with connecting to SQL Server through ur application. 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)" Step 1. Check if you can login to your SQL Server Managed Studio using ur user Name and pwd. Example using ur sa account which is ur default account If not the then follow following steps Change the authentication mode to mixed from Windows, Following are the steps to be followed. In SQL Server Management Studio Object Explorer, right-click the server, and then click Properties. On the Security page, under Server authentication, select the new server authentication mode "SQL Server and Windows Authentication mode", and then click OK. In the SQL Server Management Studio dialog box, click OK to acknowledge the requirement to restart SQL Server To Enable the sa login. In Object Explorer, expand Security, expand Logins, right-click sa, and then click Properties. On the General page, you might have to create and confirm a password for the sa login. On the Status page, in the Login section, click Enabled, and then click OK. Step 2. Enable remote connecti