Problem Connecting To SS2K5 Named Instance Using Client Tools
Aug 9, 2007
Hi,
The problem I have is this:
I have installed SQL Server 2005 Enterprise Edition on a W2K3 server that already has a SQL Server 2000 default instance installed. The installation appears to be a success. The problem is that having installed the client tools, and trying to connect, I get the following error message in a dialog:
"Cannot connect server SERVERNAMEINSTANCENAME
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)"
The funny thing is that I can connect to the SQL Server 2000 default instance that is on that server.
So it's obviously not a connection problem per se at my end i.e. bad dns etc which might stop me resolving the server name.
Googling for this error text gives the following advice on various web sites:
1. Check that the remote server allows connections.
It does, as other colleagues in my team have successfully installed the tools and can connect with no problems.
2. Check that the SQL Browser service is running.
It is, as without this running, my colleagues would not be able to connect either.
3. Open SQL Server Configuration Manager. Select "SQL Server 2005 Network Configuration | Protocols for MSSQLSERVER" then enable the protocols you need.
The required protocol (TCP/IP) is enabled. Named pipes is also enabled, although I don't think that we're using that. And shared memory is also enabled by default.
4. Open the firewall and add exceptions for sqlbrowser.exe or UDP port
1434
There is no firewall running at either end of the connection and as mentioned I can connect to the SS2K default instance.
5. Make sure that the server machine is reachable.
I can connect to the SS2K default instance so it must be reachable. I can't see that I would need to change any configuration settings as my colleagues are using exactly the same default settings for their connections and they work fine.
The only thing that I have done differently is that I originally installed the client tools using someone else's privileged account as I didn't have admin rights on my box. The client tools didn't work, so I got admin rights to my box, uninstalled the client tools and then reinstalled them using my account. Still no luck. Not sure if something is still hanging around after the uninstallation that would cause me a problem.
To help, I've also filled out the following questionnaire:
[1] Client side:
> What is the connection string in you app or DSN?
There isn't one. I'm trying to connect from the SQL Server Management Studio | 'Connect to Server' dialog.
> If client fails to connect, what is the client error messages?
"Cannot connect server Y
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)"
Is the client remote or local to the SQL server machine? Remote
Can you ping your server? YES
Can you telnet to your SQL Server? YES
What is your client database provider? [SNAC | MDAC | ADO.NET1.0 | ADO.NET2.0| other (please specify] N/A
What is your client application? SQL Management Studio
Is your client computer in the same domain as the Server computer? Different domains
What protocol the client enabled? [Shared Memory | TCPIP | Named Pipes]. All 3 protocols are enabled
Do you have aliases configured that match the server name portion of your connection string? No
Do you select force encryption on server and/or client? No
[2] Server side:
What is the MS SQL version? SQL Server 2005
What is the SKU of MS SQL? Enterprise
What is the SQL Server Protocol enabled? [Shared Memory | TCPIP | Named Pipes ]. All 3
Does the server start successfully? YES. Other people can connect to the same instance.
If SQL Server is a named instance, is the SQL browser enabled? YES
What is the account that the SQL Server is running under? Domain Account
Do you make firewall exception for your SQL server TCP port if you want connect remotely through TCP provider? N/A. Firewall not running.
Do you make firewall exception for SQL Browser UDP port 1434? N/A. Firewall not running.
What tool or Application are you using to connect to SQL Server SQL Server Management Studio
[3] Platform:
What is the OS version? Windows 2003 (Server side), Windows XP Pro Version 2002 SP 2
Do you have third party antivirus, anti-spareware software installed? Symantec AntiVirus
[4] Misc:
If you have certificate configuration issue: N/A
Has anybody else come across this problem, as I've run out of ideas.
We have installed SQL 2000 SP4 on Windows 2000 Server. We created named instances on the SQL server. When trying to connect to named instances from a remote sql client which is on windows 2000 and windows 2003, its throwing an error message saying that remote connections are disabled. But, remote connections are enabled on the SQL server. After changing the component services settings on windows 2003 where sql client is installed, we are able to connect to named instances. But, after applying the same settings on another windows 2003 machine, we are unable to connect to the same instances.
We have another machine where we installed SQL 2005 on windows 2003 SP1. When trying to connect to named instances from any remote client, its throwing an error message saying that remote connections are disabled. But, remote connections are enabled in SQL server settings. We tried connecting to the instances by changing the component services settings but still we are facing the same issues.
Please forgive me for the newbie question, I've done almost all of my DBA work on Oracle(on UNIX so I'm learning alot of AD stuff too) and am new to MS SQL Server.
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(FYI, the Publisher works fine with another 2005 Standard server)
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Connection Timeout Expired. The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement. This could be because the pre-login handshake failed or the server was unable to respond back in time. The duration spent while attempting to connect to this server was - [Pre-Login] initialization=1; handshake=14998; (.Net SqlClient Data Provider)
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I am trying to setup a client alias to connect to a named instance on another server.
TITLE: Connect to Server ------------------------------ Cannot connect to fred. ------------------------------
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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 53)
[URL]
The network path was not found
------------------------------ BUTTONS: OK ------------------------------
I have set up the alias on the server and as expected it works. On the client side I have used the SQL Server Client Network Utility to configure the client side alias but no luck
I am using TCP/IP with a specific port ..
By the way the SQL is SQL Server 2012 Ent and the O/S is Windows 2012 R2 minshell
Someone please help me before I loose all of my hair :mad: !!!
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