I am trying to configure SQL Server to allow LAN connection but I do not seem to have any luck.
I am using the default server name and have created a new SQL Server user with a username and password.
I have also enabled Named Pipes and TCP\IP from SQL Server Configuration Manager and then reset the server.
I have tested the user on the local computer witch will act as the server
It seems that the client PC throws this error:
I usually get this error when I type the wrong server name this leads me to believe that I might need to add some additional configuration.
Can anyone point me the right direction on what I have to do next?
Related
I have a client for which I am setting up a new SQL Server Express and (on a different computer) connecting their Access front end to that SQL Server. I created an account on SQL Server, changed authentication to SQL Server. I am able to log on to that account with no issues locally (through SQL Server Management Studio) on the server itself, but when I go back to the client machine and try to create either an ODBC connection or connect directly in Linked Table manager, I get the error below. Looking at the error log in SQL Server I can see no failed logins. In Access and/or ODBC I use Servername\SQLEXPRESS, choose SQL authentication and type in the username/password that I created. But it's still being stubborn.
I'm kind of at my wits end with this one. I checked to make sure that login is enabled, that the created database is mapped to this user, but I'm out of answers. Anyone have any ideas? I'm sure it's something really stupid that I'm overlooking, I've used SQL Server for a long time but I'm not an experienced DB Administrator I'm sure it's something really simple I'm overlooking, but I've done this hundreds of times before. And Windows Authentication won't work because it's on a different computer.
To connect to a named instance on SQL Server Express with Servername\SQLEXPRESS, you need:
SQL Server Browser service running,
and its UDP port 1434 open in the firewall.
https://learn.microsoft.com/en-us/sql/sql-server/install/configure-the-windows-firewall-to-allow-sql-server-access
SQL Server Browser service
UDP port 1434
The SQL Server Browser service listens for incoming connections to a named instance and provides the client the TCP port number that corresponds to that named instance.
The fixed TCP port for your instance open in the firewall.
You set this in SQL Server Configuration Manager
https://learn.microsoft.com/en-us/sql/database-engine/configure-windows/configure-a-server-to-listen-on-a-specific-tcp-port
This looks more like a network setting rather than server issue.
Check if all necessary permissions, configuration and settings on your machine running the server are OK to accept external connections.
Usually its the server that is rejecting the connection for security reasons.
I'm running SQL Server 2012 on a Microsoft Windows Server 2012 R2. I am running a named instance called PP. The server authentication is set to "SQL Server and Windows Authentication mode".
When I am logged into the server via Remote Desktop I can log in to the named instance via SSMS just fine using a using a SQL Server username and password. When I try to log into the named instance remotely using the same username and password I get an error as described in this screenshot (my reputation isn't high enough to paste the screenshot directly in my post, please follow the link):
Here are the things I have checked so far:
I can ping the IP Address of the remote server from my local computer and get successful responses.
I have configured the instance of SQL Server to accept remote connections as described in this article.
In SQL Server Configuration Manager on the remote server under the protocols for my named instance I have enabled "Shared Memory", "Named Pipes" and "TCP/IP".
Under "TCP/IP" properties on the remote server in SQL Server Configuration Manager in the "IP Addresses" tab under the "IP2" section I have set the "TCP Dynamic Ports" value to blank. I have tried setting the "TCP Port" value to 1433 and then to 1434 (the difference between a regular instance and a named instance) and going through the rest of the steps below as shown in the screenshot here (these are the values specified in the article I linked to above)
Windows firewall is not running on the remote server, and from what I can see there is not another firewall running on the remote server either.
The SQL Server Browser service on the remote server has been stopped and restarted.
After I have made all of these changes and verified all of these settings the SQL Server service for the named instance on the remote server has been stopped and restarted.
After all of this I am still getting my original error when I try to connect to the named instance of SQL Server on my remote server from my local computer via SSMS. I've been searching high and low and cannot find any additional troubleshooting steps to diagnose this problem. Will someone please point me in the direction of the next steps I should take to fix this? Thanks in advance.
I logged off and then came back the next day to implement the suggestions in #Andrey Nikolov 's answer and for some reason I am able to connect remotely to the named instance now. The settings that ended up working for the "IP2" section of the "TCP/IP" configuration for the named instance are the "TCP Dynamic Ports" value is set to blank and the "TCP port" is set to 1433. I didn't make any other changes. The rest of the configuration is as I noted in my OP. I have sysadmin access to this server but I'm not the actual administrator so I guess it's possible that the actual administrator might have changed something else between when I logged off and then logged back on but I don't know what that might be. Thanks to #Andrey Nikolov for your input.
EDIT:
This issue came back in full force a few days later for no reason that I could determine. After a long search I found a very informative MS Doc that goes through the whole troubleshooting process for this in depth, hope this helps someone else confronted with this. Here's the link:
https://learn.microsoft.com/en-us/sql/database-engine/configure-windows/troubleshoot-connecting-to-the-sql-server-database-engine?view=sql-server-2017
It says it's for SQL Server 2017 but I was able to follow it to fix my SQL Server 2012 issue. For my situation it turns out that because I had 2 separate instances of MS SQL on my server the initial instance was using all of the default settings as described elsewhere and my instance I was trying to connect to was using a completely different port. Using this Doc I was able to find out what port my instance is using and specify that in the "Server name" box of SSMS when I tried to connect. Now it works like a charm.
I think your named instance TCP/IP isn't configured properly. In case you connect locally it does not connect using TCP/IP, but using shared memory. You set your instance to listen on port 1434, but this port is used by SQL Browser service and most likely the SQL Server engine service can't open the port (you can confirm that by finding the error in the logs). To make it work you should set IP2 -> TCP Dynamic Ports to be 0 and clear IP2 -> TCP Port. Configured like this, your named instance will use dynamic ports. If you want to configure it to use specific port, replace 1434 in IP2 -> TCP Port with available port number.
I created an Azure SQL Server. I have set the firewall, added my IP address to the rules. I tried to log in using SQL Server Managment Studio but got the network error every time. I am using the Server Admin Login and password created while creating the SQL server. Are there any more steps required to log into the SQL Server?
Note: I also enabled port 1433 for inbound connections on my PC.
According to the error message, we should check the server name of the database.
We can select the database here, and SQL Server Managment Studio will type the server name automatically:
Another way, we can find the information via azure portal, then type the server name manually:
It seems you are using named pipes to connect to SQL database. What happens if you specify TCP/IP protocol in advanced properties tab?
Thanks Everyone for your inputs. The only issue was, the firewall was blocking the port 1433. After opening it, I could connect to the SQL Server hosted in Azure. The link below mentions the requirement to open the said port. https://learn.microsoft.com/en-us/azure/sql-database/sql-database-develop-direct-route-ports-adonet-v12
I cannot connect to a named instance of SQL Server. I am trying to connect to domain\named_instance but this happens to all servers I try to connect to apart from localhost
The error that I cam getting looks like this:
So far I have tried:
Enabling remote connections in SQL Server
Enabling TCP/IP in the SQL Server Configuration Manager
Changing all the TCP ports in SQL Server Configuration Manager to 1433
I also tried running the command below where the number is the Process ID of the SQL Server Service:
netstat -ano | find /i “7608”
My result was as follows:
As suggested by this website.
However I do not get the ESTABLISHED return only the 2 LISTENING ones.
My IP2 IP address is set to: 192.168.2.176not 100% sure if this is right or not.
I cannot (due to security issues with my hosting company) get the IP of the server. Any and all suggestions are welcome!
I am in dire straits, and really need help!
I am using SQL Server 2008
Since you are stating you are trying to use named pipes (can be seen in the screenshots) I think you errornously trying to use TCP configuration to do this.
You need to need to enabled SQL to listen named pipes. How to do - see here.
There are multiple types of error "Cannot connect to 'Server Name'".
These error are differentiated on the basis of Error Additional Information.
One of the Solution for above error is
Connect the server using Windows Authentication.
Right Click on the Server(i.e. first option) in Object Explorer. Then go to Properties.
Go to Security then select Server Authentication as "SQL Server and Windows Authentication Mode"
Again Right Click on the Server(i.e. first option) in Object Explorer. Then select restart.
Then try again login using SQL Authentication
I have checked the instance name, auto close is set to true, allow remote connections on the server is checked. The server is running when I open the SQL Server configuration manager. I have even rebooted. I have created this db the same way as all others. I use Entity Framework and have checked the names in the web.config and they match. This is the default connection string from the wizard - I use for testing before I deploy. I just can't think of anything else to check to figure out why it won't connect. Working inside SQL Server everything is fine.
Here is the general error.
A network-related or instance-specific error occurred while establishing a connection to SQL >Server. The server was not found or was not accessible. Verify that the instance name is >correct and that SQL Server is configured to allow remote connections. (provider: Shared >Memory Provider, error: 40 - Could not open a connection to SQL Server)
Config:
connectionString="metadata=res://*/Model.csdl|res://*/Model.ssdl|res://*/Model.msl;provider=System.Data.SqlClient;provider connection string='data source=.\SQL_1;attachdbfilename="C:\Program Files (x86)\Microsoft SQL Server\MSSQL10_50.SQL_1\MSSQL\DATA\A_db.mdf";integrated security=True;connect timeout=10;user instance=True;multipleactiveresultsets=True;App=EntityFramework'" providerName="System.Data.EntityClient" />
Thanks in advance.
Let me preface this answer by saying that proper setup of a SQL instance is not as easy as Microsoft would like you to think with the entity framework. It's a little bit involved and requires that you put your DBA hat on for a little bit.
The error you have indicates that the web instance is attempting to connect to the SQL server using Windows Integrated Security. This will work fine if (a) the windows user that the process is running as (which can be configured in IIS) is authorized to log on to the SQL server and has a valid login in the database and (b) if the SQL server is on the same machine or in the same domain as the IIS server.
In light of this, I recommend using SQL Server authentication. If you need to know how to do this, I recommend searching for "SQL Server Authentication setup" - here is an article that I found which might help you set this up.
http://msdn.microsoft.com/en-us/library/aa337562.aspx
In general, I recommend taking the following actions:
Connect to the sql server using MS SQL Management Studio.
Permanently attach your database, then use the Initial Catalog property on your connection string rather than AttachDbFileName
Then set up your login username and password on the SQL server, and create a login in the database for it.
Make sure your login can only execute the stored procedures you want it to execute. Deny it access to running sql statements.
You will also need to add the username and password to your connection string, and set IntegratedSecurity=false.
Let us know how things go once you get your SQL server set up properly.
This error means that your provider code cannot find the SQL Server. If you have checked the server instance name (it should be <yourLocalServer>\SQL_1), then it could be the attachdbfilename= parameter, as this is a really unreliable way to specify the database to connect to (you should be using the Database Name, not the file name), because there are about a hundred reasons that the file name could change that have nothing to do with your application.