SQL Server Agent Log showing errors [298] SQLServer Error: 10061, A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL

Hi All,
I have started receiving this error in the logs for the last 10 days and the Schedules Jobs for the database have stopped running. My MS CRM application is working fine.
Can anyone guide me what could be the problem.
Date                      17/4/2014 2:04:20 PM
Log                         SQL Server Agent (Current - 17/4/2014 2:01:00 PM)
Message
[298] SQLServer Error: 10061,
A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct
and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online. [SQLSTATE 08001]
Date                      17/4/2014 2:11:55 PM
Log                         SQL Server Agent (Current - 17/4/2014 2:01:00 PM)
Message
[298] SQLServer Error: 10061,
A network-related or instance-specific error
has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information
see SQL Server Books Online. [SQLSTATE 08001]
Date                      7/4/2014 11:00:31 AM
Log                         SQL Server Agent (Current - 17/4/2014 2:01:00 PM)
Message
[298] SQLServer Error: 10061,
A network-related or instance-specific error
has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information
see SQL Server Books Online. [SQLSTATE 08001]

Check this link
http://social.msdn.microsoft.com/Forums/en-US/906da9b5-2482-468c-a424-ae099da2d96b/sql-server-agent-service-account-error?forum=sqlsetupandupgrade
Regards, RSingh

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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: Named Pipes Provider,

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: Named Pipes Provider,
error: 40 - Could not open a connection to SQL Server)

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Hello,
Make sure your SQL Server service is started.
Make sure TCP\IP and names pipes protocol is enabled
Make sure you have made an exception in firewall for SQL Server connection
Make sure SQL Server browser service is enabled
Make sure you connect with correct name hostname\instance name for named instance,MSSQLSERVER for default instance and Hotname\SQLEXPRESS for express edition.
Please make sure you use port no when connecting to SQL server listeing on different port (hostname\instance ,portno)
http://blogs.msdn.com/sql_protocols/archive/2006/09/30/SQL-Server-2005-Remote-Connectivity-Issue-TroubleShooting.aspx
Hope this helps
Please mark this reply as the answer or vote as helpful, as appropriate, to make it useful for other readers

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. (p

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)(Microsoft SQL Server, Error: 2)
The system cannot find the file specified
Cannot connect to COWBOYS.
Here are the technical details===================================
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) (.Net SqlClient Data Provider)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&EvtSrc=MSSQLServer&EvtID=2&LinkId=20476
Error Number: 2
Severity: 20
State: 0
Program Location:
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFailover)
at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover)
at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer
timeout)
at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance)
at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance,
SqlConnectionString userConnectionOptions, SessionData reconnectSessionData)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.Open()
at Microsoft.SqlServer.Management.SqlStudio.Explorer.ObjectExplorerService.ValidateConnection(UIConnectionInfo ci, IServerType server)
at Microsoft.SqlServer.Management.UI.ConnectionDlg.Connector.ConnectionThreadUser()
===================================
The system cannot find the file specified
I have tried from so many forms. This is so frustrating. Thank for everyone/anyone who wants to help. So this is what happened: I had to uninstall my previous sqlserver 2012(which worked great) for some reason, and I uninstalled everything from that download.
Then I installed the trial edition of sql server 2012 (64 Bit) and It wouldn't connect to the database. (Error mentioned above.) My local DB is COWBOYS. (COWBOYS is also my computer name.) After this, I have tried downloading sqlexpress and sqlserver 64bit
many times and cannot connect to my local DB.
How do I connect to my Local DB?
Also, I think this might help: (When I run sqlserve.exe, which I was able to find in C:\Program Files\Microsoft SQL Server\110\LocalDB\Binn, I get an error: Your SQL server installation is either corrupt or has been tampered with(Error getting
instance ID from name). Please uninstall then re-run setup to correct this problem.
I would happily re install it, if it wasn't my 20th time.
I don't have any remote connections, I don't use username/password, only window authentication. I work mostly on visual studio, but without able to store /retrieve data, I don't know how to survive.
May be the solution is very simple, but I am too frustrated.
Some of the things I have tried:
From a command prompt, enter one of the following commands:
net start "SQL Server Agent (MSSQLSERVER)" OR
net start "SQL Server Agent(instancename)"(for instance)
on my sql configuration, I cannot start anything because there is nothing there to start. I can post more details, if that would help. Also, some more details about the error:
Details
Product:
SQL Server
ID:
2
Source:
MSSQLServer
Version:
10.0
Component:
SQLEngine
Message:
An error has occurred while establishing a connection to the server. When connecting to SQL Server, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error:
40 - Could not open a connection to SQL Server) (.Net SqlClient Data Provider)
Explanation
SQL Server did not respond to the client request because the server is probably not started.
User Action
Make sure that the server is started.
Version:
9.0
Component:
SQLEngine
Message:
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: Named Pipes Provider, error:
40 - Could not open a connection to SQL Server) (.Net SqlClient Data Provider)
Explanation
SQL Server did not respond to the client request because the server is probably not started.
User Action
Make sure that the server is started.
Any one that can help me, I will be greatful. Thank you so much. p.s. please ask me anything if you have any questions.

It sounds like there are a couple things going on here. First check if you have a successful install of SQL Server, then we'll figure out the connection issues.
Can you launch SQL Server Configuration Manager and check for SQL Server (MSSQLSERVER) if default instance or SQL Server (other name) if you've configured your instance as a named instance. Once you find this, make sure the service is started.
If not started, try to start it and see if it throws an error. If you get an error, post the error message your hitting. If the service starts, you can then launch SSMS and try to connect. If you have a default instance, you can use the machine
name in the connection dialog. Ex: "COWBOYS" where Cowboys is the machine name. However, if you named the SQL Server instance during install, you'll need to connect using the machine\instance format. Ex: COWBOYS\Romo (where Romo
is the instance name you set during install).
You can also look at the summary.txt file in the SQL Server setup error logs to see what happened on the most recent install. Past install history is archived in the log folder if you need to dig those up to help troubleshoot, but the most
recent one may help get to the bottom of it if there is an issue with setup detecting a prior instance that needs to be repaired.
Thanks,
Sam Lester (MSFT)
http://blogs.msdn.com/b/samlester
This posting is provided "AS IS" with no warranties, and confers no rights. Please remember to click
"Mark as Answer" and
"Vote as Helpful" on posts that help you. This can be beneficial to other community members reading the thread.

Connecting to the LOB system has failed. 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

hi ,
when generate the schema , i got the below error, please any one put your inputs:
Connecting to the LOB system has failed. 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).

thaks shanky,
but facing another , after generate schema from WCF_SQL, im unable get elements in my schema.
this is schema generate from storeprocduer , but thru WCF-sql im unable get the elements like
id, name
<xsd:schema targetNamespace="urn:schemas-microsoft-com:sql:SqlRowSet2" xmlns:schema="urn:schemas-microsoft-com:sql:SqlRowSet2" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sqltypes="http://schemas.microsoft.com/sqlserver/2004/sqltypes" elementFormDefault="qualified">
<xsd:import namespace="http://schemas.microsoft.com/sqlserver/2004/sqltypes" schemaLocation="http://schemas.microsoft.com/sqlserver/2004/sqltypes/sqltypes.xsd" />
<xsd:element name="Test.dbo.sample">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="id" type="sqltypes:int" minOccurs="0" />
<xsd:element name="name" minOccurs="0">
<xsd:simpleType>
<xsd:restriction base="sqltypes:nvarchar" sqltypes:localeId="1033" sqltypes:sqlCompareOptions="IgnoreCase IgnoreKanaType IgnoreWidth" sqltypes:sqlSortId="52">
<xsd:maxLength value="1000" />
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</xsd:simpleType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
<Test.dbo.sample xmlns="urn:schemas-microsoft-com:sql:SqlRowSet2">
<id>18</id>
<name>BIRADAR</name>
</Test.dbo.sample>
<Test.dbo.sample xmlns="urn:schemas-microsoft-com:sql:SqlRowSet2">
<id>18</id>
<name>BIRADAR</name>
</Test.dbo.sample>
<Test.dbo.sample xmlns="urn:schemas-microsoft-com:sql:SqlRowSet2">
<id>19</id>
<name>sw</name>
</Test.dbo.sample>
<Test.dbo.sample xmlns="urn:schemas-microsoft-com:sql:SqlRowSet2">
<id>18</id>
<name>BIRADAR</name>
</Test.dbo.sample>
<Test.dbo.sample xmlns="urn:schemas-microsoft-com:sql:SqlRowSet2">
<id>14</id>
<name>swe</name>
</Test.dbo.sample>
<Test.dbo.sample xmlns="urn:schemas-microsoft-com:sql:SqlRowSet2">
<id>13</id>
<name>se</name>
</Test.dbo.sample>

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.

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hi Mr Thuan
Soldier
i checked
some of your Solution like SQLService (Was OK) , Allow Remote connection (was OK & has check mark), Restart SqlService (Done Successfully), Network Card Driver (my Connection is OK) before , but didnot check SQL
Service account & i will do Soon,
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[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFailover)
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[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.SqlClient.SqlConnection.Open()
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.<Open>b__36(DbConnection t, DbConnectionInterceptionContext c)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext](TTarget target, Action`2 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.Open(DbConnection connection, DbInterceptionContext interceptionContext)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Core.EntityClient.EntityConnection.<Open>b__2()
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass1.<Execute>b__0()
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Core.EntityClient.EntityConnection.Open()
[03/29/2015 22:08:01 > 6ca05b: ERR ] --- End of inner exception stack trace ---
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Core.EntityClient.EntityConnection.Open()
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Core.Objects.ObjectContext.EnsureConnection(Boolean shouldMonitorTransactions)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass7.<GetResults>b__5()
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Core.Objects.ObjectQuery`1.<System.Collections.Generic.IEnumerable<T>.GetEnumerator>b__0()
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Data.Entity.Internal.LazyEnumerator`1.MoveNext()
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Ritual.WebJobs.Members.Functions.ManualTrigger(TextWriter log, Int32 value, String& message)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at lambda_method(Closure , Object[] )
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Microsoft.Azure.WebJobs.Host.Executors.VoidInvoker.InvokeAsync(Object[] arguments)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithWatchersAsync>d__23.MoveNext()
[03/29/2015 22:08:01 > 6ca05b: ERR ] --- End of stack trace from previous location where exception was thrown ---
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithOutputLogsAsync>d__1c.MoveNext()
[03/29/2015 22:08:01 > 6ca05b: ERR ] --- End of stack trace from previous location where exception was thrown ---
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithLogMessageAsync>d__c.MoveNext()
[03/29/2015 22:08:01 > 6ca05b: ERR ] --- End of stack trace from previous location where exception was thrown ---
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithLogMessageAsync>d__c.MoveNext()
[03/29/2015 22:08:01 > 6ca05b: ERR ] --- End of stack trace from previous location where exception was thrown ---
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<TryExecuteAsync>d__1.MoveNext()
[03/29/2015 22:08:01 > 6ca05b: ERR ] --- End of stack trace from previous location where exception was thrown ---
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Microsoft.Azure.WebJobs.Host.Executors.ExceptionDispatchInfoDelayedException.Throw()
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Microsoft.Azure.WebJobs.JobHost.<CallAsyncCore>d__7.MoveNext()
[03/29/2015 22:08:01 > 6ca05b: ERR ] --- End of stack trace from previous location where exception was thrown ---
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Microsoft.Azure.WebJobs.JobHost.Call(MethodInfo method, Object arguments)
[03/29/2015 22:08:01 > 6ca05b: ERR ] at Ritual.WebJobs.Members.Program.Main()
[03/29/2015 22:08:01 > 6ca05b: SYS INFO] Status changed to Failed
[03/29/2015 22:08:01 > 6ca05b: SYS ERR ] Job failed due to exit code -532462766
If i remove any of my database code and use just the basic Stub code my webjob will run successfully so i know that my connection strings (outside of the DB ones) are correct. My MVC web application also runs perfectly using the same connection strings
in Azure so i also know that they have also been configured.
I am now lost and need some guidance, so if someone is able to assist me that would be much appreciated.
Thanks
Ritual.

Can you try to log the connection string you are using in both cases to make sure they are the same?
Also can you share your site name, either directly or indirectly?
This will help us investigate.
Thanks,
Amit

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

Dear all,
I know that this topic may be a bit old school; but it really make me mad as I tried all solutions i found and it still cant be resolved....please give a hand...
The situation is like this,my company divided different platform as a status of project, like DEV, SIT and UAT. I got a project that require me to upgrade an vs2003 project to vs2005. I upgraded it completely and
successfully, it works fine in development and UAT platform; EXCEPT, the SIT platform.
The situation is very strange that, once I move the source to SIT, it return 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)
but it never happen in either DEV or UAT platform and even do I copy the workable web.config from DEV or UAT platform to SIT, the error still here and unable to resolve it.
I search a lot in the internet by Google, but solution suggested are not suitable or fail in my case. Most answer suggest that "enable remote control", "check fire wall", "check server" etc......But as I can connect well the
DBServer in DEV and UAT properly, I dont think those are the cause(but still, I check them all, and all are enabled properly, except my firewall setting is OFF, so adding port is ignored).
After all the searching and testing, I believed and have reason to believe that, the cause is inside my web.config:
<appSettings>


<clear/>
<add key="Environment" value="UAT v1.31"/>
<add key="DBServer" value="DB_UAT"/>
<add key="cnBPSS.ConnectionString" value="data source=DB_UAT\BPSS;persist security info=True;user id=theloginid;workstation id=RP_UAT;packet size=4096;pwd=theloginpwd"/>
<add key="UTBPSSConn.ConnectionString" value="data source=DB_UAT\BPSS;persist security info=False;user id=theloginid;workstation id=RP_UAT;packet size=4096;pwd=theloginpwd"/>
<add key="UTDSBDBConn.ConnectionString" value="workstation id=RP_UAT;packet size=4096;user id=theloginid;data source=DB_UAT\DSBDB;persist security info=False;password=theloginpwd"/>
<add key="cnDSBDB.ConnectionString" value="workstation id=RP_UAT;packet size=4096;user id=theloginid;data source=DB_UAT\DSBDB;persist security info=False;password=theloginpwd"/>
<add key="Timer1.Enabled" value="True"/>
<add key="Timer1.AutoReset" value="True"/>
<add key="cnbpss.ConnectionString" value="data source=DB_UAT\BPSS;password=theloginpwd;persist security info=True;user id=theloginid;workstation id=RP_UAT;packet size=4096"/>
<add key="cnbpss1.ConnectionString" value="data source=DB_UAT\BPSS;password=theloginpwd;persist security info=True;user id=theloginid;workstation id=RP_UAT;packet size=4096"/>
</appSettings>
</configuration>
I know such kind of setting is old school; But due to this program runs for few years from tons of ppl...I dont dare to modify it unless I am very sure they are the cause.....
May I ask if anyone cna give me some advice and help in this issue please? I already tried for weeks and turning mad....Please I really need some help...
Many thanks.
Ksun Chan

Checklist of possible reason of this error
1. Check SQL services are running
2. Check SQL Browser service is running
3. Check remote connections are enabled
4. Network connectivity between database & application servers by TRACERT command
5. Check TCP/IP protocol enabled at SQL server
6. Check talent connectivity – telnet <IP address> <port no on SQL server running>
7. Check UDP port 1434 is open or not on SQL Server
8. Check firewall is running or not Check
9. If firewall running, SQL Server & UDP port must be added in exception in firewall
Regards,
Rohit Garg
(My Blog)
This posting is provided with no warranties and confers no rights.
Please remember to click Mark as Answer and Vote as Helpful on posts that help you. This can be beneficial to other community members reading the thread.

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible.

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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
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.
Exception Details: 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 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)
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[SqlException (0x80131904): 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)]
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +4846887
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +194
System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject) +4860189
System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +90
System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +342
System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +221
System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +189
System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +185
System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +31
System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +433
System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +499
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117
System.Data.SqlClient.SqlConnection.Open() +122
System.Data.Common.DbDataAdapter.QuietOpen(IDbConnection connection, ConnectionState& originalState) +31
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +112
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +287
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +92
System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1297
System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +19
System.Web.UI.WebControls.DataBoundControl.PerformSelect() +142
System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +73
System.Web.UI.WebControls.GridView.DataBind() +4
System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +82
System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() +72
System.Web.UI.Control.EnsureChildControls() +87
System.Web.UI.Control.PreRenderRecursiveInternal() +44
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +842
Version Information: Microsoft .NET Framework Version:2.0.50727.3082; ASP.NET Version:2.0.50727.3082

On what website/link did you received this error message ??

Connecting to the LOB system has failed. A network-related or instance-specific error occurred while establishing a connection to SQL Serve

Hi!
I'm using consume adapter service> sqlbinding > to connect to sql database in order to generate sql schemas.
I'm getting below error:
Connecting to the LOB system has failed.
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).
Christiane

Hi,
As suggested earlier this seems to be a DTC related issue. It can only occur if the DTC settings are not proper or if firewalls don't allow the default ports to communicate.
Check DTC settings on both SQL and BizTalk Box and also check if MSDTC service is up and running.
Go to Start
à Run
à (type in) Dcomcnfg. You should be inside Component Services MMC.
Expand Component Services
à Computers
à My Computer (right click)
à Properties
à MSDTC tab
à Security Configuration button.
Select the checkboxes as following :
Check the below article from Microsoft Support Team, they have listed all the errors which may come during setting up a new system. They also have your MSDTC error listed.
Resolving the issues you may face during BizTalk Runtime Configuration
Thanks,
Prashant
Please mark this post accordingly if it answers your query or is helpful.

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

Hi all,
I have three central sites with each having a Front End server pool (standard).
Site A and Site B are paired for resiliency. Site C is on its own.
On two of my Front Ends (Site A and Site B), when I click on response group tab i get the following warning on the top of the page:
"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 check out the following articles about dont think they apply to me:
http://unifiedme.co.uk/2014/01/network-related-instance-specific-error-occurred-accessing-lync-control-panel-response-group-tab/
I dont see any Event logs that would direct me to a cause.
Which database it is complaining about? RGSDYN and RGSCONFIG are local databases as it is an standard installation. What could be the possible cause for this issue?
Thanks in advance.

My latest change was the addition of Site C.
Going through logs (i must have missed it the first time, with all the noisy EWS errors), i found event ID 31147. I am investigating network issues although I have MPLS running to that location.
Does Lync set up open correct ports on the machine itself?

Network related or instance specific error occurred while establishing a connection to sql server

Hi all,
I am getting a 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified).
Problem is when a user tries to connect with remote SQL Server
through VPN from Domain, it throws this error, and when the same machine tries to connect with Remote SQL Server through VPN as a standlone machine, it is getting connected.
I checked all the settings but ....... There is no any policies deployed in Active Directory.
Any suggetion?
Rajneesh
Rajneesh Kumar MCITP - SA, MCSE, CNA

check these
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\Instance and Server\\Instance in your connection string]
3) Make sure the server machine is 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.
http://uk.linkedin.com/in/ramjaddu

A network-related or instance-specific error occurred while establishing a connection to SQL Server2012

TITLE: Connect to Server
Cannot connect to RAVI\SQLEXPRESS.
ADDITIONAL INFORMATION:
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) (Microsoft SQL Server, Error: -1)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&EvtSrc=MSSQLServer&EvtID=-1&LinkId=20476
BUTTONS:
I installed it many times correctly,every thing installed succeeded but when trying to connect getting the above error...
please help me to solve this..:(((

Hi,
Following should be taken care of
1. Make sure TCP/IP and named pipes protocol is enabled
2. Make sure browser service is up and running
3. Make sure SQL express service is up and running
4. If you are connecting from remote make sure exception in firewall should be made.
5. If your SQL Server is listeing on port apart from 1433 make sure you connect like
RAVI\SQLEXPRESS,portno
Please mark this reply as the answer or vote as helpful, as appropriate, to make it useful for other readers

Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. This failure occured while attempting to connect to the Principle server.

We are using SQL Server 2012.
Every now and then, when we execute the below stored procedure INSERT_INTO_MYTBL, we got the below error, and it returned @ID = 0.
"Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
This failure occured while attempting to connect to the Principle server."
What causes this error, and how can we fix it ?
Thank you.
create procedure INSERT_INTO_MYTBL
@ID int output,
@Order varchar(50) = NULL,
@ACCOUNT varchar(20) = NULL
AS
DECLARE @Success int, @TryNr int, @ErrMsg varchar(500), @ErrNumber int, @expected_id int;
SET @Success = 0;
SET @TryNr = 1;
SET @ErrMsg = ''
WHILE @Success = 0 AND @TryNr <= 3 and @ErrMsg = ''
BEGIN;
BEGIN TRY;
BEGIN TRANSACTION;
retry:
BEGIN TRY;
SELECT @expected_id = ident_current('myTbl') + 1
SELECT @order = @account + '-' + CAST(@expected_id AS varchar(50))
insert into myTbl
([Order],ACCOUNT)
values
(@Order,@ACCOUNT)
END TRY
BEGIN CATCH;
SELECT @ErrNumber = ERROR_NUMBER()
IF @ErrNumber = 2627
BEGIN;
GOTO retry
END;
ELSE
BEGIN;
SET @ErrMsg = '1.' + ERROR_MESSAGE() + ' ' + @order
RAISERROR (@ErrMsg, 16, 1);
END;
END CATCH
select @ID = SCOPE_IDENTITY()
IF @id <> @expected_id
BEGIN
UPDATE myTbl
SET [Order] = @ACCOUNT + '-' + CAST(@ID AS varchar(50))
WHERE ID = @ID
END
SET @Success = 1
COMMIT TRANSACTION;
END TRY
BEGIN CATCH;
ROLLBACK TRANSACTION;
SELECT @ErrNumber = ERROR_NUMBER()
IF @ErrNumber = 1205
BEGIN;
SET @TryNr = @TryNr + 1;
IF @TryNr > 3
RAISERROR ('Giving up after 3 consecutive deadlocks for %s', 16, 1,@ACCOUNT);
END;
ELSE
BEGIN;
SET @ErrMsg = '2.' + ERROR_MESSAGE() + ' ' + @order
RAISERROR (@ErrMsg, 16, 1);
END;
END CATCH;
END;

When the problem occurs, the stored procedure returns @ID = 0, which I think means the query
When the problem occurs, the procedure does not return anything. SQL Server was told to stop executing. Furthermore, unless you issue the command SET XACT_ABORT ON, SQL Server will not roll back any open transaction. Which is one more reason you should not
permit command timeouts.
As for why this procedure sometimes take a long time, I would primarily suspect locking. When this occurs (but before the timeout elapses!), you could use my beta_lockinfo to see if there is any blocking going on. You find it here:
http://www.sommarskog.se/sqlutil/beta_lockinfo.html
Erland Sommarskog, SQL Server MVP, [email protected]

SQL Server Agent Log showing errors [298] SQLServer Error: 10061, A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL

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