Cannot Connect To A Default Express Instance
Feb 5, 2007
When I try to connect to a default Express instance in Management Studio at the machine (Windows XP SP2) where the instance is installed, I'm getting the 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) (Microsoft SQL Server)
What does provider: SQL Network Interfaces mean? Does it mean the Shared Memory, Named Pipes and TCP/IP?
Additional information:
1. The following Network Protocols are enabled: Shared Memory, Named Pipes, TCP/IP thru Configuration Manager
2. SQL Server Express default instance is running using NT
AUTHORITYNetworkService.
3. SQL Server Browser service is not running. I believe this is not needed unless I want to connect to the instance from another machine.
4. Has tried to disable Windows Firewall but I believe it should not be matter in this particular case since this is within the same machine.
5. Can connect to the instance in ODBC Administrator using System DSN thru Named Pipes or TCP/IP.
Can such error caused by not having sufficient memory so the system is running kind of slow?
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May 21, 2015
I create default instance on SQL Server 2012 Standard.
When I set it up, I changed instance id from 'mssqlserver', which is a default value, to 'new_instance_id'.
For some reason I want to connect to the instance with computername new_instance_id
Can I do it?
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Apr 25, 2007
I have a server with 3 SQL Server named instances on it - servername, servername/TST and servername/GOLDSTD. I have several databases on the default instance (servername) but users cannot access the databases unless they are given system admin privileges to their login. This occurs using both SQL Server Logins and Windows authentication logins. If I move the database to a different named instance (servername/TST), the problem no longer exists and users can connect with dbo privileges. Any suggestions or is this typical for default instances? Thanks in advance for any help
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Jun 8, 2007
Dim strCON As String = _
"workstation id=DJI-MAIN;packet size=4096;user id=sa;integrated security=SSPI;data source=DJI-MAIN;persist security info=False;initial catalog=RacingSystem"
Dim cnn1 As New SqlConnection(strCON)
cnn1.Open()
This is the code I have been using to connect to my default instance for 18 months. A recent upgrade to Windows Live onecare now prevents me connecting to the server from the same machine. The following error message is generated:-
Unhandled Exception: System.Data.SqlClient.SqlException: SQL Server does not exist or access denied.
at System.Data.SqlClient.ConnectionPool.GetConnection(Boolean& isInTransaction)
at System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnectionString options, Boolean& isInTransaction)
at System.Data.SqlClient.SqlConnection.Open()
at TrainerReport001.Form1.Form1_Load(Object sender, EventArgs e) in F:#ProjectsStatsOwnerReport001Form1.vb:line 84
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)The program '[3336] TrainerReport001.exe' has exited with code 0 (0x0).
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.SafeNativeMethods.ShowWindow(HandleRef hWnd, Int32 nCmdShow)
at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
at System.Windows.Forms.Control.set_Visible(Boolean value)
at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at TrainerReport001.Form1.Main() in F:#ProjectsStatsOwnerReport001Form1.vb:line 2
If I turn off the onecare firewall I can connect as normal, but this is not a desired option. I have tried enabling port 1433 on the firewall, this does not work either. Any help greatly appreciated, onecare support seems reluctant to help.
TIA
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Jan 9, 2007
Hi Folks,
Is it better to install SQL Server Express Default or install as Named Instance?
What are the pros and conns?
Thanks
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Feb 7, 2007
Hello:
I have a requirement to connect to a user instance of sql express from a visual basic 6.0 project. I'm having trouble with my connection string.
I'm able to connect with my connection string to sql express:
Set cn = New ADODB.Connection
cn.ConnectionString = "Provider= SQLOLEDB; Data Source=.SQLEXPRESS; Integrated Security=SSPI;Connect Timeout=30"
and the get user instance name:
'Get the user instance name
strSQL = "SELECT owning_principal_name, instance_pipe_name From sys.dm_os_child_instances"
but don't know how to query the instance name. Currently, I am returning the user instance name in a function. My questions are:
1. Is there any parameter for the user instance name in the connection string?
2. To attach and detach, what providers are available?
3. Using the Provider=SQLNCLI, is the AttachDBFileName parameter optional if I supply the database?
4. What is best recommended practice for querying a user instance from application code in vb6?
5. Are there any articles that specifically describe how to query a user instance if the dbfilename path is dynamic?
Sorry if my questions are not clear. I'm new to microsoft programming (coming from Lotus/Domino)
Thanks for any help you can give me.
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Apr 18, 2008
(have reposted this here from Setup group, since no answers there)
Hi,
I am having a lot of trouble connecting to a user instance I've created. User instances have been enabled, Named pipes are also enabled. Running on XP SP2 with SQL2K5 SP2. I also have a standard SQL2005 instance running on this development machine.
When using SqlClient in a .Net2.0 application, my connection string to create the user instance looks like:
"Data Source=.SQLEXPRESS;integrated security=true;attachdbfilename=c: emp3500.mdf;user instance=true"
This connection succeeds and I see the new service being started etc. I also see the log file being created in my Application Data area. The log file all looks normal except for these lines at the very top of the report.
2008-04-15 16:29:13.57 Server Error: 17156, Severity: 16, State: 1.
2008-04-15 16:29:13.57 Server initeventlog: Could not initiate the EventLog Service for the key 'D69F8BFF-E490-47'.
2008-04-15 16:29:13.67 Server Error: 17054, Severity: 16, State: 1.
2008-04-15 16:29:13.67 Server The current event was not reported to the Windows Events log. Operating system error = 6(The handle is invalid.). You may need to clear the Windows Events log if it is full.
2008-04-15 16:29:13.67 Server Microsoft SQL Server 2005 - 9.00.3054.00 (Intel X86)
I can also run a query on the main express instance to check if a child instance is running:
SELECT owning_principal_name, instance_pipe_name, heart_beat FROM sys.dm_os_child_instances
gives:
METECHsteve \.pipeD69F8BFF-E490-47 sqlquery alive
If i try to connect via sqlcmd with this command line:
C:Program FilesMicrosoft Visual Studio 8VC>sqlcmd -S np:\.pipeD69F8BFF-E49
0-47 sqlquery -l 60
this will give:
HResult 0x57, Level 16, State 1
SQL Network Interfaces: Connection string is not valid [87].
Sqlcmd: Error: Microsoft SQL Native Client : 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..
Sqlcmd: Error: Microsoft SQL Native Client : Login timeout expired.
If i try to connect via SSMS using the pipe name above and everything else defaulted, i get the 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: 25 - Connection string is not valid) (.Net SqlClient Data Provider)
Both errors are pretty similar. I am running this locally, so I suspect the 'remote connection' error text is a red herring. The connection string is pretty minimal so I cant see why the connection string is invalid.
Heres another wierd thing. It used to consistently work. It now consistently fails. I have also tried creating a VM with SQLX. Now that works initially but once it fails, it seems to fail consistently. Reboots of the VM dont seem to fix it. That sort of leads me to believe that I've done something to my server (ie a setting somewhere).
Any help getting this connection issue sorted would be appreciated!
Thanks,
Steve
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Oct 11, 2007
I recently installed SQL Server and Visual Studio. When I went into SQL Server, I could only connect to a SQL EXPRESS Database engine. I need to access the full Database. I tried disconnecting it, uninstalling/reinstalling. Now I cant connect to the SQL EXPRESS DB Object. There are no SQL Server services running.
Please help.
Thanks
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Mar 4, 2007
Problem: I upgraded a SQL Server Express instance to SQL Server Enterprise, but I'm unable to connect to the SQL server from any remote machine. Only local connections work -- and I've verified that Remote Connections are allowed in the SQL Surface Confg. utility.
Scenario: Server1 has an SQL Enterprise edition installed as a default installation. SharePoint Server 2007 was installed later, and during that install a SQL Express edition instance was installed which is part of the standard SharePoint install. That Express instance contains all the SharePoint content databases.
So Server1 has SQL instances:
Server1 <default install running Enterprise>
Server1OFFICESERVER <previously running SQL Express, now upgraded to Enterprise>
After upgrading Server1OFFICESERVER to Enterprise, everything seemed to work fine (i.e. SharePoint works fine). However when I try to connect remotely to Server1OFFICESERVER I can't. I've verified through the SQL Surface configuration tool that remote connections are allowed. I've rebooted the server as well. I've tried connecting remotely using various PCs and various applications (e.g. SQL Server Mgmt Studio, Visual Studio, etc.).
Any other ideas to try?
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Feb 19, 2007
Hi, I have a task in hand to migrate (upgrade) from SQL2K named instance to SQL2K5 default instance. There are many intranet applications touching current SQL2K. I would like to perform this upgrade such that I don't have to touch any application code - meaning I don't have to change the connectionstring to point to new Default instance. How can I achieve this?
So, in otherwords, here is what I want to achieve:
Current Server: SQL2K: SERVER_AINSTANCE_A (named instance)
Upgraded Server: SQL2K5: SERVERB (default instance)
If I have both default, I could achive this by setting up DNS alias after migration done so that any call for SERVER_A would point to SERVER_B. But in my case, I don't have SERVER_A, I have named instance. Is there any solution?
Regards,
Vipul
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Oct 10, 2001
I am trying to set up a Named Instance of SQL 2000 on the same machine that has a default instance of SQL 7.0. The setup always completes and I am able to register the Named Instance of the SQL Server with which it was installed on. However, when I try to connect the users to the database, with both windows and SQL authentication, I receive a SQL server not found error. I have tried an alias setup as well as physically specifying the port number in settup up an ODBC connection.
Has anyone ran into similar problems?
Also, has anyone been able to successfully complete the process as mentioned above?
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Mar 2, 2007
I have a server with sql server 2005 installed as the default instance -- I have a piece of software that needs SQL2000 to be the default instance. Is there a way other than install new sql2005 named instance and move databases to rename my SQL2005 instance from <machinename> to <machinename>sql05 for example?
Bryan
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Aug 24, 2006
I have SQL Server 2000 Standard Edition (sp3a) running on a windows 2003 (sp4) Server.
It is a Production Server with 3 NAMED Instances and NO Default Instance.
Does anyone know if I can rerun the SQL Server Install and add a DEFAULT Instance to this box without disrupting the other Named Instances???
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Oct 30, 2007
I installed SQL Server 2005 recently on a cluster. I didn't go for the default instance and instead I named the instance option. Now I would like to migrate everything from the named instance to the default instance, which I haven't yet installed.
Is this an easy process? What about the logins and the maintenance plans and jobs? Is there anything else I need to be aware of?
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Apr 13, 2007
Hi
I've never had to do this, but when I downloaded the Web Workflow Approvals Starter Kit, it requested that I install the database into a User Instance of .SQLEXPRESS.
Now the problem is, I've installed it onto a default instance, so I was wondering whether you can create a named instance on top of a default instance... and if so, how would you do that?
Cheers
Chris
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Jul 22, 2015
I've two instances(Default, Named[dynamicsFINANCE]) running on SQL server 2014. However, when I try to connect to named instance say (dynamicsFINANCE) using SQL authentication from local SSMS, I get below error message:
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)
I assigned a static port number to the named instance [dynamicsFINANCE] 1450. I also setup the firewall rule to allow access to Port 1450.
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Mar 20, 2014
I have a 3 node cluster on which I have installed SSAS as it's own insntance. I have created this as a named instance and can connect to it by serverinstance if I'm on the server itself. However from my desktop I get the error saying instance was not found on server name.
I have defined an alternate port and setup firewall rules and can connect via server:port but not serverinstance. Prior to making this change SSAS was running on default port of 2383 and I could connect just by servername.
I have read many articles for previous versions saying that clustered SSAS will always use 2383 and that you must connect just using servername. However and this is were it gets strange. I have a 2 node UAT cluster with SSAS setup exactly the same way I've described above and I can connect from my desktop as serverinstance.
Should I be able to connect as serverinstances for a named clustered instance in 2012 ?
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Nov 15, 2007
The box I am trying to connect to is running two instances of SQL Server.
There is a SQL Server 2005 instance which is the default. There is a SQL Server 2000 instance which is named 'SQLSERVER'.
I can connect to the SQL Server 2000 instance no problem:<add key="ConnectionString" value="server=MYPCSQLSERVER;database=mydatabase;user id=****;password=****" />
However, I am having trouble connecting to the Default SQL Server 2005 instance. I have tried:
<add key="ConnectionString" value="server=MYPC;database=mydatabase;user id=****;password=****" />
but it doesn't work. I have tried explicitly setting SQL Server 2005 to use port 1434 (as SQL Server 2000 is running on port 1433), and then used:
<add key="ConnectionString" value="server=MYPC,1434;database=mydatabase;user id=****;password=****" />
but this doesn't work either.
Am I mssing something here? Any help much appreciated
Thanks...
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Jan 17, 2007
If you were asked to install SQL 2005 on a machine, would u install a default instance or a named one? And why would u choose one over the other?? Also, r there any issues with using a default instance?
Thank you for all your help.
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Oct 17, 2014
I designed the AlwaysOn wrong, but every time we fail over from primary server to another server, my applications cannot connect because the sql logins cannot connect to their default databases. Once I run the command to link the login with the user in the default database then the users are able to connect. Did I do something wrong when designing AlwaysOn?
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Dec 26, 2007
I have a SQL server with SQL 2000 installed and running, in parallel with a recent SQL 2005 installation (viaa named instance on the same box, etc.) - What I would like to do is "decommision" the SQL 2000 installation and "promote" the 2005 named instance to the default- is there a way to do this?
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Feb 27, 2008
I will need to use a unique instance name. Do i first need to install SQL 2005 using the Default Instance name, than install using my unique Instance name?
Any help appreciated.
Thanks,
Kerry
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May 20, 2004
We installed SQL 7.0 first, then SQL 2000. SQL 7.0 is the default instance.
How can we change the default to SQL 2000?
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May 15, 2008
I have SQL server 2005 Developers edition instaled on W2003 only one instance. When I'm trying to install SP2, service pack can't see default instance. I can only upgrace tools and other stuf. I need to upgrade server.
Hava anybody some idea?
Thank you
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May 5, 2006
Problem: When the application installs it requires SQL Express
Server 2005. If it does not exist it will install it or
rollback. -> continue installation -> When the form
attempts to locate an SQL Instance on a machine that has not had SQL
server or any components connected before it shows up as
<null>. I need to have access to the server(s) instances in
order to build the application database inside SQL. Am I using
the wrong approach with SQLDMO? Is there adifferent method
to access the installed SQL Express 2005 connection string?
Current code to locate SQL Instances:
try
{
////////////////////////////////////////
// Search and List SQL Server Instances
////////////////////////////////////////
//set cursor to thinking/hourglass
System.Windows.Forms.Cursor.Current =
System.Windows.Forms.Cursors.AppStarting;
//begin
ArrayList aServers = new ArrayList();
SQLDMO.ApplicationClass acServers = new SQLDMO.ApplicationClass();
//loop through the servers found
for (int iServerGroupCount = 1; iServerGroupCount <=
acServers.ServerGroups.Count; iServerGroupCount++)
{
for (int iServerCount = 1; iServerCount <=
acServers.ServerGroups.Item(iServerGroupCount).RegisteredServers.Count;
iServerCount++)
{
aServers.Add(acServers.ServerGroups.Item(iServerGroupCount).RegisteredServers.Item(iServerCount).Name);
}
}
//add the servers to the drop down box
if (aServers.Count < 1)
{
string NotExist = "<No Servers Found>";
cboServers.Items.Add(NotExist);
cboServers.SelectedIndex = 0;
btnSQLDataBaseCheckDB.Enabled = false;
}
else
{
cboServers.Items.AddRange(aServers.ToArray());
//select the first item in the array index to display
cboServers.SelectedIndex = 0;
}
}
catch (Exception ServerException)
{
MessageBox.Show(ServerException.Message);
}
Slightly stuck at the moment with this. Any tips or leads in the right direction would be greatly appreciated.
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Aug 18, 2006
Is this the only way to rename the default SQLEXPRESS instance name?
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q283811
Is there an easier way? I tried going to Register and changing it.. but that didn't seem to do anything.
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Nov 13, 2007
Hi,
I am new to this forum and new to SQL, hope someone can help me. TIA
I have SQL 2000 running on the windows 2000 server. The program reside on the E drive and the data reside on the D drive, my system files drive C got corrupted and gave me the blue screen of death, so I had to reload it from back up, but in doing so, my SQL "Local" default instance fail to load after I got the server back up and running. My other instances are running fine except for the Local. Is their a way to bring that back? or do I have to reload SQL default instance ?
Thanks
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Mar 16, 2008
I just installed Sql Server 2005, and opened the Sql Server management studio, and the connect to server dialog box popped up, i selected database engine, but what do I put in the server name box? I tried my computer name, and got an error, i tried localhost and got an error, i tried my computer name/localhost and got an error. I installed it as the default instance with windows authentication, and I verified that the sql server service is running, but I always get a login error. Can anyone help me get started?
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Jul 23, 2005
Currently I have a server that has two instances of SQL Server that areboth heavily used. We are moving the databases that are on the defaultinstance of this server to a new server. Since the old server willonly need one instance (the current named instance) of SQL Server isthere a good way to remove the default instance and make the namedinstance the default? If this change is possible will the name of thecurrent named instance need to be changed? Will all of the programscurrently accessing the named instance need to change their connectionstring?
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Mar 12, 2008
Hi,
Can I Install a default instance on Virtual SQL Server on a 2 node Cluster. If I already have a default instance on a different Virtual SQL Server on the same clustered Server.
What i am trying to do..
if i create 2 virtual sql Server (say sqlVi1 and sqlVi2)..
i want o connect using sqlVi1 and sqlVi2..not Sqlvi1 and SQlvi2Namedinstance.
If yes..How can I do it?
Thanks in advance
I Hope someone from Microsoft or MVPs will help me.
if this is not the corrcet forum...please point me the correct one
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Oct 7, 2015
How to identify an instance - default or named ?
Is there any parameter or any where in properties sql server show as 'Named' or ' Default'.
or
if SELECT SERVERPROPERTY ('InstanceName') result is blank, then can we assume it is a default one ?
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Aug 25, 2015
Though to setup Alwayson, it is necessary to have both SQl Instances to be in same version, same database file path , etc.But, is this possible to setup the AlwaysOn between a default and a named instance?
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Jul 28, 2015
why we will go to install named instance as we having default instance already installed. Is there any advantage of named instance.
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