If you are receiving following error:
TITLE: Connect to Server
——————————
Cannot connect to Database Server.
——————————
ADDITIONAL INFORMATION:
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) (Microsoft SQL Server, Error: 1326)
I suggest that you read previous article first as that describes how to fix the problem and has worked for many cases.
SQL SERVER – Fix : Error : 40 – could not open a connection to SQL server
Now if SQL Server can be connected perfectly from local system but can not be connected from remote system, in that case firewall of the server where SQL Server is installed can be issue.
Follow instructions of this article to fix the issue.
Go to control panel >> Firewall Settings >> Add SQL Server’s Port to Exception List.
Now try to connect to SQL Server again. It will allow you to connect to server successfully.
Reference : Pinal Dave (http://blog.SQLAuthority.com)
Hello,
Just to add 2 cents to your notes,
I came across same problem last week, and I came to know that we have to do the following things in order to solve the above issue,
1. Disable windows firewall, or make an exception and add port number for SQL, this works well if you have only one instance of SQL Server, if you have more than one SQL Server instance then I guess you have to enable all other ports used by SQL Server.
2. In “Client Network Utility” tool of SQL Server add the server name of ip address of the server you are trying to register in the Alias section and most important choose which type of protocol you want to choose, either named pipes or TCP/IP
3. If you are using 2005, then use SAC to enable, allow remote connections to server and to use both TCP/IP and named pipes to connect.
Please correct me if I am wrong.
Thanks,
Imran.
I’ve chenged the TCP/IP address of the SQL protocols and now i can’t remember it can you please help me how to recover it i get no connectivity error
There are couple of to troubleshoot this problem. The one you should use depends on how your databse server was configured.
For example, if you configure the database engine to use dynamic port allocation, make sure that sql browser is runnning.
SQL browser provides the connection information about the database engine to the the client.
If the sql browser is not running and you have restarted sql server and port 1433 is being used by other applications,
database engine will be allocated a different port number. Imagine that the client has been configured to use port 1433
to connect and the database engine is using a different port number. The client wont be get the connections properties to the database engine from sql browser
because sql browser is not running.
To avoid this type of problems, when the database engine has been configured to use dynamic ports, make sure that your sql browser
is always running.
Sorry–
There are couple of ways to troubleshoot this problem. The one you should use depends on how your databse server was configured and some other factors as well.
For example, if you configure the database engine to use dynamic port allocation, make sure that sql browser is runnning.
SQL browser provides the connection information about the database engine to the the client.
If the sql browser is not running and you have restarted sql server and port 1433 is being used by other applications,
database engine will be allocated a different port number. Imagine that the client has been configured to use port 1433
to connect and the database engine is using a different port number. The client wont be get the connections properties to the database engine from sql browser
because sql browser is not running.
To avoid this type of problems, when the database engine has been configured to use dynamic ports, make sure that your sql browser
is always running.
I swear, I have absolutely exhausted every concievable solution to this problem, and I’m still stuck.
I’m getting this error in CRM 4.0 when embedding an ASP page with a gridview of information from a stored procedure on my database.
I’m pretty sure it’s Kerberos related, because the page connects fine on my development workstation, but fails on the CRM web server (where there’s a double-hop between my credentials and the SQL server) It’s been broken for weeks now. Here is a (partial) list of the fixes that have NOT worked:
Surface Area configuration: Both Named Pipes and TCP/IP enabled.
SQL Server Browser is running
Added the server name, and the server\instance into my HOSTS file on the server.
Changed my connection string to the IP address, just the hostname, and the hostname\instance name
Added SPNs for every possible permutation of: hostname, host\instance and IP address.
Confirmed that both the NT AUTHORITY\NETWORK SERVICE and HOSTNAME$ accounts have connect rights to the database.
The final weirdness: I wrote another page and put it into another web application on the same web server. It DOESN’T have the error, but it doesn’t work either. The gridview just comes through as an empty tag. Other ASP controls, like labels and buttons, work fine.
At this point, I will give either pinky to get this working.
Forgot: the windows firewall is disabled, and besides, the app works when running in the ASP development server of VS 2005 n my workstation, and of course, all of CRM works (although it mostly uses web services).
I’m getting this same error message ONLY when I specify the IP address as the server name. Everybody else in the office can hit the SQL Server — using the IP address — on my partner’s PC except me! And I can connect if I use the machine name instead of the IP address.
This just started this week, after I installed SQL Server 2008 on MY machine — my partner’s box, the one I’m trying to connect to, is still 2005. It worked fine with EITHER machine name or IP address before that.
It’s not a firewall issue, since everybody else can connect to his server using machine name _OR_ IP address. I can only connect using machine name.
It’s not a protocols issue on his server, because — again — everybody else can connect to him except me. And I ONLY get that error message if I specify the IP address instead of the machine name.
And yes, the IP address is correct. :)
Anyone have a clue?
provider: Named Pipes Provider, error: 40 – Could not open a I was getting this error:
connection to SQL Server) (Microsoft SQL Server, Error: 1326)
I changed the protocol from Named Pipe to TCP /IP and it worked. Thanks.
I was getting this error:
provider: Named Pipes Provider, error: 40 – Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 1326)
I changed the protocol from Named Pipe to TCP /IP and it worked. Thanks.
Thanks for the tip about the firewall Dave. I was struggling with this.
Dear sir, i have read your threads for following error :
“An error has occured whil establishing a connection to the server. When connecting to SQL Server 2005, this failure may be casued by the fact that under the default settings dose not allow remote connection.(Provider : Named Pipes Provider, error:40-Could not open a connection to SQL Server)(Microsoft SQL Server Error : 5)”
so please send me possible solutions which i can try.
regards,
ritesh
Dear sir,
i agreed with Ritesh… i m facing same problem, so please send me solutions.
i have read your threads for following error :
“An error has occured whil establishing a connection to the server. When connecting to SQL Server 2005, this failure may be casued by the fact that under the default settings dose not allow remote connection.(Provider : Named Pipes Provider, error:40-Could not open a connection to SQL Server)(Microsoft SQL Server Error : 5)”
so please send me possible solutions which i can try.
regards,
yatin
[...] : If above solution does not help refer the follow up post SQL SERVER – Fix : Error : 1326 Cannot connect to Database Server Error: 40 – Could not open a conne… where additional issues with FIREWALL is explained with images. Reference : Pinal Dave [...]
[...] SQL SERVER – Fix : Error : 1326 Cannot connect to Database Server Error: 40 – Could not open a conne… [...]
[...] find your solution here SQL SERVER – Fix : Error : 40 – could not open a connection to SQL server SQL SERVER – Fix : Error : 1326 Cannot connect to Database Server Error: 40 – Could not open a conne… [...]
I had a similar problem. What I did were change the port address, disable firewall and configure the Network.
Thanks this post help me to solve the problem.
I’ve a named instance (say, INST1) with the port changed to 1432
Under “Connection to server”
SERVERNAME,1432 ==> Every client works fine
SERVERNAME\INST1 ==> Some machines cannot make connection with this server name (seems cannot resolve the port no.)
It makes me confuse since not all clients cannot make connection with SERVERNAME\INST1
Hello Sir,
I am facing one small problem in one of my dummy SQL setup that I have prepared for TPC-E benchmark.This is just to have testrun before I go ahead with the actual test with real setup.
Just to give a brief : I have different Database server and Client server .Setup is prepared as mentioned below.Now I am trying to use SNAC tool to establish connectivity between the two .But MDAC is working fine.My trouble epicenter is Server-Client Connectivity using SNAC tool.
I have a separate Server installed with SQL Server 2008 , service also started , created one database through TPC-E scripts, installed SNAC tool.
I hv separate Client machine on same network ( both can reach each other over TCP/IP) , installed SNAC tool.
Now I am getting an error: “Message:[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified ” , whenever I start some TPC-E scripts on Client machine to start work on Database server.
In the process I tried some DSN configuration as described here http://www.mssqltips.com/tip.asp?tip=1471 . I tried to define it on both Server and Client .But this is not working.
Have also tried with Aliases creation .Referring to http://www.mssqltips.com/tip.asp?tip=1620.
What settings to be made on both Server side and Client side to overcome this issue. Any extra components I need install on Client side or Server side.
One more thing I hv observed is that SNAC version on both Client and server are different , can this be a problem. Is it required to be same.
Any relevant inputs on this will be helpful.
At the end I should tell you that I am pretty new to this SQL server domain , so my level of struggle has been quite at a higher scale all through the project run.Hope this will over soon.
Thanks & Regards,
Sudipt.
After all the steps mentioined above, you might still not be able to connect for SQL2005 Express.
One of the trick for SQL2005 express is that when you connect the server, you can’t just type the server name but have to type “servername\EXPRESS” instead. This applies to both SQL Server Management Studio and the code.
Errors:
An error while executing your request.
A network related or instance-specific error occurred while stabling 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: name pipes provider, error: 40 could not open a connection to sql server.
error: Msg 17, level 16, state 1 [Microsoft][ODBC SQL Server Driver][DBNETLIB] SQL Server does not exit on access denied how to solve
Dear sir,
I got this error while configuring transactional replication between two different SQL Server 2008.
I have two SQL 2008 Servers, connected via internet such as A and B.
I configure Publisher on Server A and try to add the subscriber the server B, but unable to connect the server B
error as “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) (.Net SqlClient Data Provider)”
When I use the Management studio of Server A to connect the server B the connectivity is done successfully,
But while adding subscriber it does not work..
Please help me in this regards.
Hi,
I’ve installed SQL Server 2005 and ‘Query Express’ to access it on the same PC. When I’m getting this connection failure error 40 message & I’ve applied all the advise given on above but nothing seems working. I feel exhausted now. Please adivse.
Many Thanks.
Hi All
I have a SQL Server 2000 running on Win2k3.
I am trying connecting to SQL locally on the Enterprise Manager on the machine but
I get this error: “A Connection could not be established to local
Reason: Encryption not supported in sql server
Connectionopne (prelogin(handshake)).”
The odd thing is that I can connect to that SQL Server from other
remote machines through Enterprise Manager, I just can’t connect
locally. All help is appreciated.
Thanks
Hi All,
I was able to solve it. We just need to uncheck the Encryption support in Client Network Utility. But now I am not able to connect to other sql server DB on other machine, but still I can’t connect to this DB from other machinet. I am getting error
“Msg 17, Level 16, State 1
[ODBC SQL Server Driver][DBNETLIB]Sql Server does not exist of access denied
Please help me to troubleshoot this.
Thanks
Mithalesh
Hi,
There can be multiple reason why this error is coming up.
http://blog.sqlauthority.com/2007/04/23/sql-server-fix-error-40-could-not-open-a-connection-to-sql-server/
http://blog.sqlauthority.com/2008/08/24/sql-server-fix-error-40-could-not-open-a-connection-to-sql-server-fix-connection-problems-of-sql-server/
http://blog.sqlauthority.com/2008/08/09/sql-server-fix-error-1326-cannot-connect-to-database-server-error-40-could-not-open-a-connection-to-sql-server/
http://blog.sqlauthority.com/2008/08/30/sql-server-fix-error-could-not-connect-to-sql-server-tdssniclient-initialization-failed-with-error-0x7e-status-code-0×60/
http://blog.sqlauthority.com/2007/06/10/sql-server-fix-error-an-error-has-occurred-while-establishing-a-connect-to-the-server-solution-with-images/
Best Regards,
Pinal
My Client is on Win Server 2003 and Server on Wix XP 3. I thought that might be helpful to you in helping me.
hii,
I try to connect to my database sql server 2005 from a jcreator app usind odbc… The main problem is that I can not configure the odbc data sources to connects using neither named pipes nor tcp/ip please help
I am getting this kind of error. can you please help me solve this problem . when i was installing SQl sever at that time i didnt give any login name and password . so i dont know what to give in login name and password. and also have problem with connecting SQL sever
please help me out
TITLE: Connect to Server
——————————
Cannot connect to 76.194.236.194 .
——————————
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: 3)
——————————
i also tried solution ( add port ) but still give me same error.
Hi,
(.net 2005 C# Windows Application)
My Connection String is :
string ConnString = “Data Source =//./pipe/MSSQL$SQLEXPRESS/sql/query;Initial Catalog=ErollNewDotNet;uid=sa;pwd=sa;”;
I got error like this at this point :
SqlConnection SqlCnObj = new SqlConnection(ConnString);
–> SqlCnObj.Open();
The error is:
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)…
I have checked :
–Sql server service is running,
–Named Pipe and TCP/IP both are enabled;
–Firewall is Off and Remote connection is also enabled .
And the most socking thing is same connection string is running successfully in my other web application project.
Y this Error ? Please Help me asap.
Thanks in Advance.
Latu.
Hi!
I’ve had a problem and solved it!
On remote machine in “SERVER NAME”, I’ve entered a name in format “%computername%\SQLEXPRESS” and everything worked just fine.
I have problem in SQL2000 Server. Here is what i got an error while connecting remotely.
—————————
SQL Query Analyzer
—————————
Unable to connect to server 10.0.0.153\sql2k:
Server: Msg 17, Level 16, State 1
[Microsoft][ODBC SQL Server Driver][DBNETLIB]SQL Server does not exist or access denied.
—————————
OK
—————————
Instance name is correct i could able to connect locally. But couldn’t able to connect remotely.
Firewall is off in my server and even i checked Default port of TCP\IP protocol properties. Earlier it was 0 after that i configured with 1433. But problem is Remain same.
Hi all, i have a question.
First i don’t have any experience with sql.
Now.
I want to make a private server for a game named Kal online.
After much researching i found a guide that said to install SQL.
Now i have downloaded SQL 2000 and i installed it on vista.
Many people say it can’t but he installed it so i want to give it a try.
After the installation i open the server but i get this massage:
Acces denied
and then An error 5 occuredwhile peformingthis service operation on the MSSQL service.
I have searched and searched but i can’t seem to find a solution!!
I hav tried all the above but it doesn’t help.
I really hope someone can help me with this problem!!
greetings nick
need to enable netbios then it worked.
And where can i do that?
@mac
I found it, did it but i still have the problem.
Maybe i did something wrong with installation??
hello
it my problem in the sql server2005 is connected ..
so then and sever name is not show …
can you tell me how is connect the sql server 2005 …
pls tell
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) (Microsoft SQL Server, Error:2)
pls tell me
i dont understand i waiting your reply…
1. Allow remote connections… CHECK
2. Firewall open… CHECK
3. Instance is on port 1433… CHECK
4. SQL Browser is not running… CHECK
I would get this error when using the IP address as the Data Source. Also when using IP,1433. However, when I switched to a DNS name that resolves to the same IP address, the error went away. Go figure!
@Lex3001
3. Instance is on port 1433… CHECK
You can have any port number for SQL Server. By Default SQL Server will be using port 1433, it does not mean that you/sql server cannot use any other port. This should not be an issue.
I would add one more check to your check list, as
Step 0. First, Check if SQL Server Service for that particular Instance is running or not— CHECK
When SQL Server to which you are connecting is a Default Instance then you can use IP Address as your data source
SQL Server : Default instance
IP Address to connect : ip address of host machine.
Ex :
SQL Server : Default instance
ip address of host machine : 192.168.1.100
Then you will use the same ip address.
When connecting to Named instance of SQL Server, then you will use
SQL Server : ComputerName\InstanceName
IP Address to connect : ip address of host machine\InstanceName
Ex:
SQL Server : IMRAN\PROD
Ip Address of host machine : 192.168.1.100
IP Address to connect : 192.168.1.100\PROD
One more important reason why this could fail,
Check your Port No: Its need not be always 1433,
Use this script to find out port no of sql server instance.
http://www.sqlservercentral.com/scripts/Miscellaneous/67422/
~ IM.
Hello Sir, i have one asp.net applcation which is running on my LAN …..
Some time i got this kind of error when i start my application “The connection was not closed. The connection’s current state is open.”
and
i also got this kind of error ” Timeout expired”
plz try to sloved my error …………
Thanks a lot. Start SQL Browser resolved the issue.
Verrry helpful.
Our admin spent a day to try to resolve this issue.
I got this help, teach him and got the credit as Smart(test)… kidding. Anyway thanks a lot for the site!
Really helpful!!!
mssqlserver should started fist, it will solve the problem
I have problem in Connecting remotely to SQL2000 Server.
In Local Network every thing is OK and connection is established correctly.
But when i try to connect to server (having real IP), the following error occurs
[DBNETLIB]SQL Server does not exist or access denied.
Firewall setting is done as mentioned.
TCP/IP port properties is done as mentioned.
But problem is Remain same.
I need help.
Thenks
I get the same error message, but in a different setting:
client: Win7 with SSMS 2008
server: SQL2005
The problem only occurs with 1 of the SQL servers here, and only with some clients.
The client specifically indicates to use ‘SQL Server Authentication’, and user ‘sa’ with the correct password.
However, when I check the event log on that server, it appears that the client tries to authenticate with Windows Authentication instead! (Which does not work, since the client and the server are not in the same domain)
Why does it use Windows Authentication when SQL Server Authentication is specified?
Evert
Turned out that in our case the SQL-server was NOT listening on its standard port, but had been configured to listen on a different port instead… 8-)
Si,
I have a problem. I have one server 2003and 100 client xp.
server is in workgroup bt client are in all domain.
client can not access server where xp are in domain.
client can not access sql server.
i set odbc in client. bt got an error:
connection failed sqlstate ‘HYT00′, SQL SERVER ERROR :0
plz help me
Msg 28102, Level 16, State 1, Line 2
Getting this message when i execute any Query in New Query Window, and keep on showing ‘Debugging query’ message in status bar of SQL query execution window
Hello Amar,
It seems you are working in SQL server 2008 and instead of executing you are debugging the query. Click on Execute button or press F5. Instead of debug |> button.
Regards,
Pinal Dave
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) (Microsoft SQL Server, Error: 1327
I am Getting this problem again and again plz zzzzzzzzzzzzzzzz solve my prblm
I upgraded to SQL Srvr Express 2008 and now I can’t access SQL Srvr 2000, or any of the databases. These are all on my local machine. I didn’t detach any of the 2000 databases, and I can’t attach to them using 2008. How can I get 2008 to work with the 2000 databases?
I had SQL Srvr 2005 n this machine also, it ran in harmony with SQl Srvr 2000. I have already spent a couple of days making changes to files to work with 2008, but I must also work with these older applications.
If I try starting the instance of SQL Srvr 2000, it tells me it can’t find the default instance of SQL Srvr.
Any help will be appreciated.
I set up an exception on the firewall, but the firewall is off anyway. This had no effect. I can’t attach to the 2000 databases from 2008, it won’t even let me expand the directories where those files are located. I can’t access them through ASP pages. I can see the database files and copy them with Windows Explorer, but SQL Server 2008 will not use them.
This computer is running Win XP, SP3 and also has Sony Acid on it, which uses a SQL Server 2000 database and I have set for Manual Startup. That appears to be working. But the instance of SQL Srvr 2000 installed years ago for development is dead. And I need to access the data in those databases to maintain older applications.
Any other suggestions? I just need the data, I can use 2008 if I can just attach to the databases.
@Jim,
I am sorry but I am having hard time understanding your question, you said you are not able to connect to SQL Server 2000 database after you upgraded it.
1. Can you please provide error message what shows up on your screen why you try to connect to SQL Server 2000 database.
2. Also what is the size of SQL Server 2000 database, because you are using SQL Server 2008 Express edition, it has a limitation that database size can only be less than or equal to 4 GB.
Stop SQL Server 2008 instance. Copy SQL Server 2000 database files (data files and log files) and move it to a new location. Start SQL Server 2008 instance and then try to attach database files following regular attach database process.
~ IM.
Thanks for the reply. There was no error message, the browser just sat there with the message “Connecting” – but it would never connect. The largest database was about 350 meg.
I could not get it to work after trying all suggestions I could find and I can’t make any money unless I can actually test what I am doing. So I started detaching the databases from other computers to reinstall on my current work machine (the data is old, but at least we can work on the apps). This morning I drove a hundred miles to get copies of the two which need changes to associated web pages. Over the last couple of years, the data files had been modified too much to try to use older versions of the databases. I attached the new copies this evening, now I am just modifying connection strings.
One other note, before I could attach the databases I had to modify the security on the directory for my ID. Even though I have admin rights, I had to give myself create rights to attach the databases.
I am back in business, but it just burns me up that half the time when M$ pushes out a new release we have problems that take hours (sometimes days) to resolve. And many of the issues (like this one) take a while to discover because we are not working on every application every day. I wish I had taken up something simple like brain surgery, this upgrade/update nightmare never ends. Browsers, SQL Server, Visual Studio, the operating system, firewalls, etc,. etc., etc. No upgrades on brains – they either work or they don’t (seems like more don’t than do).
hi!
i can’t register sql servers that haves only TCP/IP protocol in server network utility and raised exception “SQL Server dose not exist or access denied”
Regards,
saval
Hi Pinal,
i need to know that i am having SQL Server 2005 in my local PC . now i need to connect to server ie SQL Server 2008 . but i have full permission for both. if connected i can’t able to create a database.(Error: could not create a database acces denied,do’t have permission to create a database)
can u help u out from this.
Thanks
ravi
Hi, Dave-
I am learning SQL Server 2008. I have installed the complete package on my local PC. I can log on no problem using my default ‘windows authentication’.
Following a study guide on how to create a new user and password I did the following:
USE master
GO
CREATE LOGIN Murray
WITH PASSWORD = ‘ABC$$123′
it seems it processed this successfully, however, when trying to log in, after selecting ‘SQL Server Authentication’, I get the following error dialog:
TITLE: Connect to Server
——————————
Cannot connect to .\Master.
——————————
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)
Now, while logged on under ‘Windows Authentication’, I right clicked on the server and went into properties, Security, there I selected the radio choice for ‘SQL Server and Windows Authentication mode’. I closed out and restarted but Murray password will NOT work at all.
I even used the following command:
USE Master
GO
GRANT CONTROL SERVER TO Murray
But that did not help either…
I will appreciate any help.
Regards
Thanks for this post. It saved what was left of my hair.
I have a real difficult twist on these cases:
I have SQL Server 2008 running on Windows XP Professional
Windows Firewall is OFF
SQL Server Services: SQL Server, SQL Server Browser, SQL Agent are all running.
Protocols: Named Pipes, Shared Memory and TCP/IP are enabled
SQL Server Enterprise Manager running on the same machine cannot see the local SQL Server instance.
The database is set to Windows Authentication – this instance has until today worked without fail.
Can you please help me out with this problem
i have installed sql server 2005 now iam not able to connect to the server what could be the problem and can you say me what is the server name should i give and what type of authentication should i give for this type. My system is a local system connected with net connection and i have added port in the firewall settings.
Can you help me out with this problem please mail to [email modified] as soon as possible.
What should be the Server Name after installation?
Please let me know.
Thanks in advance.
hello
i have sql server 2008 and when i try to log onto my terminal command interpreter,i get the following error message”No port information found for host………..(which is the computer name)”
my sql database is not running
I solved my problem. I uninstalled the SQL Server 2008 piece of crap and reinstalled SQL Server 2005. IT WORKS FINE. It is ridiculous that a Microsoft product will not install on a Microsoft operating system without spending hours on blogs and trying useless attempts to make it work.
Maybe I will try again in a year or two, but at least now I can use my laptop for work.
The irony is that 2008 installed fine on my XP machine (the OS M$ wants to retire) but won’t on my Win7 OS (the next generation???).
Thanks For Above Setting I done it
But Currently problem is occurring that Every one on network can access my sql server but i can’t access other servers so if there any clues to setting then please reply
I am using SQL server 2008 and microsoft server 2008
Thanks…
thanks a lot, It works correctly
Hi,
This is really great help me to solve the problem when This error occur.
But I have One More problems that
Other Network SQL server can access me but i cannot access their server AND I have been Set all the settings that are given above.
So Please Help me out for this problem
Thanks You.
Amit Tank
Hi,
i was getting an error which i successfully resolved :)
“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)”
changing the server name from (local) to “localhost\\SQLEXPRESS” and it worked!
This solved my problem ..:)
Regards,
Syed Mujtaba Ahmed Razvi
This was exactly what I needed..
I had a new server installed in Deutsch and even though I can speak enough Deutsch day-to-day, I couldn’t get my way through all the interfaces to find the correct firewall setting without going slightly crazy.
These pictures helped me muddle my way through and now I can connect remotely to me new server :-)
Thanks Dave, as always a wealth of knowledge and one of the best SQL resources out there.
Cheers, Aaron.
Hi sir,
I have come across your blog and it is very informative. Currently, i have a very serious issue with SQL server connectivity.
I get the following error when i try to connect to SQL server from a client location ” A network related or instance specific error occured 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 conenctions.( provider: Named Pipes Provider, error: 40 – could not open a connection to SQL server. )(Microsoft SQL server error : 53)
I tried connecting to the server from another client machine and it works fine. But, from my machine i am not even able to ping the server. Firewall is disabled, TCP/IP enabled, SQL services are running fine.
However, I am able to ping other sites.
Do you think it is a Network firewall issue?
Please please help me out with a solution.
hi niharika….
this is sridhar
go to windows firewall settings and press exceptions tab
and go for add port give the following details …
name : sql
port no: 1433
and select ” TCP ” radio button …..
Dear all,
I have a big problem, pls give me solution.
I ‘ve an app. In this app, client (C# win form) access to sql database thru web services (C#). If i deploy web services and Database on one server, it work ok. But if i deploy on 2 server (in LAN), it not work, the client fire exception 1326. The Data server with: OS Win Server 2003, SQL 2000.
When I use SQL Server Management Studio (on Services Server) to connect to Data Server this connected. I’m enabled TCP/IP and Named Pipe too, Firewall is Turn off.
Help me pls.
tring chuong
I have a problem with ODBC, and SQL connectivity. Let try to explain.
The SQL server runs on our DATA BASE SERVER with and OS Windows Server 2003.
The ODBC CLIENT runs on our Application Server OS Windows Server 2008 64 bit.
After configuration of ODBC and pointing the connection to the DATABASE required. The ODBC returns an error 10016 and further indicates that it is unable to connect to the TCP socket.
We have configured the TCP/IP port and added the exception to the fire wall as per this sites instruction but still no luck.
We noted that 10016 seems to suggest registration errors, we are reluctant to run the reg edit as these are all fresh installations. Also the down load program for reg edit only supports the 2003 and not the 2008.
is it possible that we have compatibility issues with the different OS
or should we be looking else where
Can anyone help in this regard
I have same error message but the scenario is different.I have a xp machine with sql server 2000.When i connect that db from my client xp machine sql server 2005 it connects but when i try to connect from windows server 2008 with sql server 2005 it give me error message as shown above in article.
Nice….it resolved my problem n helped me to learn a new thing today.
Iam getting the error.
Login failed for user”"error 18546
as i try to connect to sqlserver 2005 on a sever
Pliz help
I never did get around this problem. But I found I could get the Developer Version of SS 2008 from M$ for only $60, so I ordered it and installed it on my computer. I got all kinds of errors saying it was not compatible with Win XT, but I ignored them and it installed okay. Now I have SQL Server and I can also do BIDS, SSIS, SSRS and have all the functionality SQL Server has. It was so much better than the free versions of SS and the features of that version allowed me to learn enough to land a new contract which will carry me for a few years.
Here’s a definite way to solve this problem.
Open SQL Server 2008
At Server name select ‘browse for more’
Go to Network Servers and select the listed server(which would be like [URPCNAME]/[INSTANCENAME]).
Connect using Windows Authentication mode and u are done!
Hi! People
For me solution that worked was adding alias with external IP on “client networking tool” option
Thanks, i have fixed my error related to MSSQLServer from this blog , Thanks for Mr. Pinal kumar Dave for a great effort
Hello Pinal,
I need your help.
i have made one application in C#.net 2008,basically application work for Server-Client architecture (LAN Network).
i made the setup of my application and its connecting perfectly fine on server where sql server express 08 install.i have install my application on client machine also and then after when ever running the application from client machine its refused to connect with sql server express its throws my coding generate message like “Unable to establish your connection to data source.Configure your setting and restart your application”
when i start the application at that i have configure like that its ask to enter the sql server name then its generate the connection string and connect it.
i am using standard connection string…
“Data Source=myServerAddress;Initial Catalog=myDataBase;User Id=myUsername;Password=myPassword;”
Can you help me in that what kind of problem is that.Can you assist me please.
waiting for your reply
hi thanks in advance…..
i am installing visual studio 2008 in my system and the database is sql server 2005 management studio express edition , when i am trying to connect sql server 2005 management studio express edition it gives following error….
please help me anybody….
the error is : Connect to server
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)
Hi all,
Non of above solutions worked for me :(
Error message –
Server is not available. Check Web.Config and database configuration.
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)
This is my connection string syntax -
1. I am using SQL Server 2005, Studio Express (free edition) on Windows Server 2003 SP2
2. SQL server is running on the same box as the IIS server
3. Added exceptions on the firewall
4. Made sure that SQL Server and Server Browser are running on services
5. TCP/IP in enabled under SQL Server Configuration
Jenish
Hi all,
I have installed Navision in 2008 server with SQL2005. While opening a database from client side I am getting an error message like
Error:[Microsoft][ODBC SQL Server Driver] Timeout expired State ID: HYT00
But if I include the user in local Administrator group then I am able to open the database without any error message.
Note: The clients are not under domain
Anybody can help me out to solve this issue.
Sridhar
Hello,
I have two servers A and B. I want to connect server B from server A and create a new database. This has to be done using stored procedure.
Please give me reply ASAP.
Thanks
I can’t connect to database from c# to Sqlserver 208 R2
What is the error you are getting?
give me suggestions about any error
What did you mean by any error?
Thanks for this post, were able to also get it working in 10 minutes :)
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) (.Net SqlClient Data Provider)
Thank you Sir,
This post solve my problem….
Here’s a definite way to solve this problem.
Open SQL Server 2008
At Server name select ‘browse for more’
Go to Network Servers and select the listed server(which would be like [URPCNAME]/[INSTANCENAME]).
Connect using Windows Authentication mode and u are done!
i am trying to host my website to IIS server. the website is working fine on local server. but after hosting, it couldn’t connect to database.
what should i do?
thanks
What kind of Authentication are you using in your connection string and in your IIS for that published Weblink ?
Please provide more details.
~ IM.
Hello sir,
I try all the option above.
but i can not solve error 40.
please reply as early as possible.
what is basic reason for this error?
whatz ur sql version
Hi Can anyone help me about this issue
“A connection cannot be made. Ensure that the server is running.The cube must be queried for you to browse data or meta data”
This is an error while I try to connect cube from visual studio 2008 to database engine (SQL server 2008 R2 developers edition)
Hi
I am having an issue connecting to SQL Server 2003 from access applciation 2003 both on the local machine. I am able to test the ODBC connection using the ODBC datbase source adminitrator and test shows as successful. But when I try connectign to through Access I get the following error.
SQLState: 01000
SQL Server Error 1326
[Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionOpen (Connect())
Connection Failed:
SQLState 08001
SQL Server Error: 17
[Microsoft][ODBC SQL Server Driver][DBNETLIB] SQL Server does not exist or access denied.
Please help
Greetings,
This article helped me solve a connection problem to SQL Server 2005 installed on Windows Server 2008 R2
I added the sql service executable SQLSERVR.EXE located in the SQL Server folder to the firewall exception list and it worked just fine.
Thanks for the help
Hi Dave!!
Many thanks for your valuable article.
It has fixed my problem and made my life easier..
Keep the good work going……
Avadesh
haii all,
i have problem with window server 2003 sp2…my client window XP sp3 cannot connet to server ( fail to connect to sql server )…but i try install client at XP sp2…it’s work!!…and also window7…all working fine..please help me to solve this problem urgently
Great Help Pinal.. i am hanging on to find a solution for two days..you saved me..
lots of thanks
Thanks to SL.Kwok.
I was searching for the right string format to give in ‘Server name’.
, worked for me.
Who would expect to give a ‘comma’ instead of a ‘colon’
Please see that the string did’nt come up properly when I used less than and greater than symbols…
Server name = servername,portname
I am working on a windows 7 platform(ultimate x64), I’m using a certain framework in my development called adelphi using sql server 2005. when I run the framework I get this error
‘databasename’ could not connect to the database server ‘computername’ on port 6000, socket error 10061, connection refused.
please help me
thanks
hi
how to connect sql2008 databtse to j2ee using driver two code??
we use the following code..
Connection con;
PreparedStatement ps;
Class.forName(“sun.jdbc.odbc.JdbcOdbcDriver”);
con=DriverManager.getConnection(“Jdbc:Odbc:Hospital”,”sa”,”pass@123″);
At the time of running we get tje following error..
“Errorjava.sql.SQLException: [Microsoft][ODBC Driver Manager] Invalid string or buffer length”
plz help me……
See this to know connect strings
http://www.sonnectionstrings.com
Hi Everybody,
I am facing one issue, Description is as follow:
My SQL database server is running in Domain A
And I am installing my application client in Domain B,
when I am putting my database instance name, and IP during installation of my client application it is “Unable to connect to database server, please check that database server is valid before proceeding”
But with the same detail I am able to install my client application in Domain A without any problem.
Help me to resolve this problem.
Thanks in Advance
DUDE ITS WORKING NOW ………….
I am using Windows 7 Home Basic Addition on my server
and have been installed MSSQL server 2000 with its latest Service pack
I was in trouble to connect sql server database through my clients, after reading your instruction given above, i have added a SQL port from my Windoes Firwall > Advance Setting > Inbound Rules > New Rule > Port > (Specific Local Port) 1433 > Allow The Connection > Finish
Its Great Yaar ..
Thanks Again
Lahore
I have absolutely no problem connecting to my SQL 2008 database remotely when using RazorSQL. However, I have never been able to connect successfully when I try connecting via SQL Server Management Studio.
don’t you also need to enable named pipes?
Sir, all Installation process of VisualStudio2008 is complete but can’t install sqlserver2005. Now how can install it in my pc? Pleeeeeeeease help me.