I'm having an issue with an SQL database connection from client pc to the server pc. FYI, I am not an SQL-wiz.
I'm using a cashier program called (الأمين), and there is not enough support for this problem. When I try to connect to the main server through the client pc, I receive the following error:
[DBNETLIB] [ConnectionOpen (Connect().]SQL Server does not exist or access denied
I already tried the following fixes:
Windows firewall inbound and outbound rules for ports 1433 and 1434.
Client Utility Management, I enabled the TCP/IP and kept the named pipes disabled. I added the appropriate server name and I added the IP of the server as alias. (This is on the Client PC)
I enabled the TCP/IP on the SQL server configuration and added 1433 under IPAll and IP1.
I made sure that the password and user names being logged in with were correct from the client pc.
I made sure "Allow Remote Connection" was turned on in the server settings.
I could've also tried some more fixes already but can't recall them right now.
Please, any help would be appreciated. I just need the client PC to connect to the server PC. The problem could be from the cashier program itself, but it works for other users of the same software. There isn't enough support for the program so I have to fix it myself. I am convinced there is a simple solution that I just don't see.
Thank you plenty in advance!
I am using version 18.8 SQL Server Management Studio, and am on windows 10.
I figured it out!
The problem was with the login of SQL.
I logged in using "sa" the user made with the SQL creation and it works now.
Thank you!
I recently installed my Microsoft SQL Server Management Studio(SSMS).
I havem my sql express installed.
Why am I getting this error when I try to login using integreated services method.Tried almost everything from google search(Turned Firewall off,edited policies).
On thing I didn't got was MsDtsSrv.exe which had to be added to firewall exeptions.
I have been trying this since last few days. Please help.
Error Message
Anything Wrong here?
Hopefully this is resolved by now, but here's for posterity.
This is very likely just a firewall issue (it was for me).
Remote to your server and open up Windows Firewall; you need to allow C:\Program Files\Microsoft SQL Server\xxx\DTS\Binn\MsDtsSrvr.exe through the firewall, and then you need to create a new rule to open up TCP port 135.
Im currently making a wpf Windows Application, and it withdraws data from a database, so it is needed that I setup a connection to my remote servers SQL Server Database. Now i am getting a couple errors. When I first of all try to connect to my remote servers Sql Server using management studio, just to test if I could actually make a connection, I get the following error.
A connection was successfully established with the server, but then an error occured during the login process. (provider: Named Pipes Provider, error: 0 - No process is on the other end of the pipe.)
(Microsoft SQL Server, Error: 233)
And ovcourse, I did try my best to do my research, and I found out a few things talking about allowing the SqlBrowser in firewall properties, done that...
allowing a connection to port 1433 and port 1434 through windows firewall, done that both.
Is there something Im missing or not doing?
Also it says "a connection was succcessfully established with the server" which means that It is able to connect, but something is going wrong somewhere. Also where it says "error occured during login process" could it simply mean I entered the wrong credentials?
I mean, when installing the SQLExpress I chose Windows Authentication so I never really got a username and password, So i just used the username and password for the Administrator account I use to connect to my server itself. Dont know It could have something to maybe just do with my login.
Could anyone please point me in the right direction as to why Im getting that error, even though I have enabled the TCP Connections and allowed SqlBrowser.
Any help would be greatly appreciated.
Thanks.
This is a bad certificate-related error, probably caused by different operating systems/environmental differences. If this is for testing purposes I'd disable the certificate, or you can configure it here (which is probably a good idea if you're creating a real application and not just playing around with it).
Please run the sql service and agent service by creating new id and start the service with that like ea admin or any other.
The port error will continue to show even if you fix the port ,check telnet configuration and enabled/open port via it.
I had similar problems so i created a virtual server installed sql server2008 r2 and then started it worked fine.
There are possibilities of error and authentication problems since we reuse the server by formatting it .
I am at an loose end with one particular box that is running SQL Server 2008 R2 Express.
Windows Firewall is configured to allow inbound TCP & UDP 1433, 1434.
Windows Firewall is configured to allow outbound TCP & UDP on any port.
No other software AV/FW is currently running.
When I try to connect to xxx.xxx.xxx.xxx\sqlexpress, it times out with the following error:
TITLE: Connect to Server
Cannot connect to xxx.xxx.xxx.xxx\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)
I have checked that remote connections are allowed on the server.
I have confirmed TCP/IP is enabled and configured in SQL Server Configuration to allow connections on the external IP to 1433.
I have also used Wireshark from my local machine and I can see requests for 1433 UDP going to the remote server.
But using Wireshark on the remote server shows no inbound connection requests for 1433 UDP or anything from my external IP (with filtering to remote RDP from results).
This makes me think it is a firewall issue.
The server is hosted by an external company who have control over the PIX in front of our server.
I need to troubleshoot this as much as possible myself as the hosting company have no clue what they are doing.
I had a similar problem which was solved by going to the "SQL Server Configuration Manager" and making sure that the "SQL Server Browser" was configured to start automatically and was started.
I came across this solution in the answer of this forum post:
http://social.msdn.microsoft.com/Forums/en-US/sqlexpress/thread/8cdc71eb-6929-4ae8-a5a8-c1f461bd61b4/
I hope this helps somebody out there.
press windows+R open RUN Window
services.msc
find SQL Server(SQLEXPRESS) right click on that and start the service
then check
Go to SQL Server Configuration Manager > SQL Server Services > In Right Side window show all the servers which may stop. If you are using "SQLEXPRESS" then ,
Right click on SQL Server(SQLEXPRESS) and start. After try to connect server... I had same problem but I resolved by these steps.
Here is a simple method to troubleshoot connection issues:
Create an empty file called test.udl using a text editor
Double click the file test.udl, then specify your connection properties
Hit the "Test Connection" button.
I recently encountered the same issue however I am using Windows 10 Technical Preview Build 10041 and SQL Server 2014 (Advanced).
Follow the same advice from above:
In particular, my problem was that I did not enable the TCP/IP in Sql
Server Configuration Manager->SQL Server Network
Configuration->Protocols for SQLEXPRESS.
Once you open it, you have to go to the IP Addresses tab and for me,
changing IPAll to TCP port 1433 and deleting the TCP Dynamic Ports
value worked.
Follow the other steps to make sure 1433 is listening (Use netstat -an
to make sure 0.0.0.0:1433 is LISTENING.), and that you can telnet to
the port from the client machine.
Finally, I second the suggestion to remove the \SQLEXPRESS from the
connection.
AND ----> That last line is important! It looks like to be Windows 10 specific; remove \SQLEXPRESS from your connection string. What was frusting was that SQL Management Studio connects just fine using either connection string (full or short), however Visual Studio only accepted the connection string without the \SQLEXPRESS.
The active firewall on the server might be causing this. You can try to (temporarily) turn it off and see if it resolves the issue.
If it is indeed caused by the firewall, you should allegedly be able to resolve it by adding an inbound rule for TCP port 1433 set to allowed, but I personally haven't been able to connect this way.
I had a Same Problem but i solved by Restarting the browser service in SQL CONFIGURATION MANAGER and removing \SQLEXPRESS from the instance name in the connection window.
It's security all about. Make sure you have double check your firewall (windows and anti virus) in some cases when you disabled av firewall and restart your computer, automatically windows firewall is active and it's still block your application. Hope this is helpful ..
Could you post the connection string you're using that's giving you trouble?
You might need to add the port number to the Data Source value, as omitting it can also produce SQL Error 26.
E.g.: Data Source=ServerHostName\SQLServerInstanceName,1433
If you have done anything but in spite of all couldn't connecting?!!
In my case i have changed connection part splitting port "," instead of this ":"
The corresponding TCP port or pipe name is not specified in the connection string (such as Srv1\SQL2008, 1433).
This issue also confused me a few days, after the IT guy changed some security settings on the SQL Server.
I have an EntityFramework for the Web application and for a desktop application.
After I changed some settings on the SQL Server, the Web application comeback to work, but the desktop still facing issue. But I used the same connection string for both applications, it make no sense one is working but the other doesn't.
Then I searched a lot until I found someone saying here it is needed to add port number 1433 after the $ServerName\$DatabaseInstanceName,1433.
After I added it, the exception became:
System.Data.SqlClient.SqlException: Login failed for user
'domain\name-PC$'
Then I found this link. It says to add Trusted_Connection=False;.
The whole connection string should be like:
data source=XXXXX\SQLSERVER,1433;initial catalog=XXXDB;user id=UserID;password=PWD;Trusted_Connection=False;MultipleActiveResultSets=True;
Hope this answer will help the ones out off Generic exception:
Error: 26-Error Locating Server/Instance Specified
Have you Disabled the VIA setting in the SQL configuration manager? If not, do disable it first (if VIA is enabled, you cannot get connected) and yes TCP must be enabled. Give it a try and it should be working fine.
Make the changes only for that's particular instance name.
Cheers!
I found this url to be very useful:
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/2cdcab2e-ea49-4fd5-b2b8-13824ab4619b/help-server-not-listening-on-1433
In particular, my problem was that I did not enable the TCP/IP in Sql Server Configuration Manager->SQL Server Network Configuration->Protocols for SQLEXPRESS.
Once you open it, you have to go to the IP Addresses tab and for me, changing IPAll to TCP port 1433 and deleting the TCP Dynamic Ports value worked.
Follow the other steps to make sure 1433 is listening (Use netstat -an to make sure 0.0.0.0:1433 is LISTENING.), and that you can telnet to the port from the client machine.
Finally, I second the suggestion to remove the \SQLEXPRESS from the connection.
EDIT: I should note I am using SQL Server 2014 Express.
This really Works .. i had verified lot of sites and finally got the answer
This may occurs when the master.mdf or the mastlog.ldf gets corrupt . In order to solve the issue goto the following path
C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL , there you will find a folder ” Template Data ” , copy the master.mdf and mastlog.ldf and replace it in
C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\DATA folder .
Thats it . Now start the MS SQL service and you are done .
While there can be many reasons for this error - In my case it was pretty simple which I overlooked for a while. I was using server IP address along with instance name for Server as -
<add name="MyDBConnection"
connectionString="Persist Security Info=False;User ID=sa;Password=xxx;Database=MyDB;Server=nn.nn.n.nn\SQLInstance01; Connection Timeout=180" providerName="System.Data.SqlClient"/>
Correct connection string will look something like this (note this one doesn't have SQL Server instance name)
<add name="MyDBConnection"
connectionString="Persist Security Info=False;User ID=sa;Password=xxx;Database=MyDB;Server=nn.nn.n.nn; Connection Timeout=180" providerName="System.Data.SqlClient"/>
HTH.
In my case, I Installed SQL Express 2012 and the problem raise after I reboot my PC. I solved so:
I go to Services -> SQL Server (SQLEXPRESS) and I see that was stopped. I started and It's say an login error.
In properties, Tab Log On, I change it to Local System account , then I can start the SQL service.
Then to test it, I go to SQL Server Management Studio and I connect to .\SQLEXPRESS and it works!
I had a similar problem which was solved by going to the "SQL Server Configuration Manager" and making sure that the "SQL Server Browser" was configured to start automatically and was started.
it works for me
I got a similar problem with sql server , I have tried every thing but does not connect to database engine & it shows error:26.
First check if the database engine is running or not. by going into
configuration manager. start > sql server >sql server configuration
manager. On the right pane you should see the sql server (mss .. )
should be running state with a green indication.
IF the database engine is not running, simply uninstall sql
server / format your system if possible and then download sql
server 2012 and management studio. from
https://www.microsoft.com/en-ca/download/details.aspx?id=29062
Install server first, make sure to add server on installation phase
by clicking add server and then install management studio.
All you need to do is to go to the control panel > Computer Management > Services
and manually start the SQL express or SQL server.
It worked for me.
Good luck.
I have been looking for a solutions for this problem for days now. I have a new server running server 2003 and sql server 2005. When I turn on allow remote connections using tcp or any other options and restart the sql service, the service will not start. If I turn off allow remote connections I can then start the sql service with no problems. Anyone have any ideas on what I can do to solve this?
This is most probably due to a conflict between the two SQL servers configurations of between the SQL 2005 and another program. Look at the NT event log for more details on the failure, but I'll wager a beer that the TCP port the remote connection is trying to listen on is already taken by SQL 2003 or somebody else.
Perhaps this site can provide some insight.
http://social.msdn.microsoft.com/Forums/en-IE/vbgeneral/thread/f084daa5-bee1-4200-9820-56e8faa94788
thank you, it makes a lot of sense. I had orginally installed sql 2008. The software provider informed me that I had to have sql 2005 instead. So I uninstalled 2008 and loaded sql 2005. I will check the server for that folder and remove it and see what happens. Really appreciate it, will let you know what happens.
Mike