I have a SQL Server version 12.0 instance installed on a Windows Server 2012R2 (SERVER/SQL), and a SQL Server Express version 11.0 instance installed on a windows 10 workstation (WIN10/SQLEXPRESS). Both are on the same domain. I am logged in as the domain admin and have full rights on both SQL instances.
On my WIN10 machine I am able to create a linked server from (WIN10/SQLEXPRESS) to (SERVER/SQL).
On my SERVER when I attempt to create a linked server from (SERVER/SQL) to (WIN10/SQLEXPRESS) I am told to ensure that the instance will allow for remote connections. I have gone through about 40 hours of troubleshooting this, ensuring that all firewalls, ports, security and agents and browsers are open.
Is there any reason I cannot link a SQL Server Express to another SQL Server, but can the other way around?
I would like to be able to call stored procedures from my main SQL Server but am not able to.
Please note, the purpose for the SQLEXPRESS on the WIN10 machine is due to the vendor requirements for the software I am using. Otherwise I would have the instance on my SERVER.
Almost certianly a network issue.
Using SQL Server Configuration Manager configure SQLEXPRESS to enable TCP/IP and listen on a fixed port, preferably 1433 if no other instance is on the server. Restart the instance.
Create a Windows Firewall rule enable inbound TCP/IP connections to the port.
Test network connectivity to the target port from the other server with powershell, eg:
PS C:\> test-netconnection WIN10 -Port 1433
Test SQL connectivity with SQLCMD or SSMS on the server to the WIN10 box.
Create the linked server.
I installed SQL Server Management Studio on my machine and once it was succesfully installed, I tried to connect to the local Database Engine but I was not succesful connecting to it it showing up an error showing as Cannot connect to the Local or having Network Related problems in the connection. I got a question here once I download the SQL Server management studio Do I need to do something else to get connected to the Local SQL Server.
Thanks,
Pranay.
No you don't need by default you can connect to local machine. You might have a problem connecting from other machine in the network if TCP is not enabled, but local should work.
Make sure you typed your 'sa' password correctly or use Windows Authentication.
Did you check in Windows Services? There is the service SQL Server (SQLEXPRESS) and SQL Server Browser which must be running.
Go to your Sql Server Configuration Manager and make sure that SQL Server is running. Otherwise right click and click Start.
And sometimes you need to Enable TCP/IP in your Protocols again in your Sql Server Configuration Manager
I’m trying to access the SQL Server instance on my VPS from SQL Server Management Studio on my local machine. It’s not working (the error I’m getting 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.
I think this is because I need to configure the database engine to allow remote connections (correct me if I’m wrong!). So I’ve found this step-by-step guide to help me do that: http://www.linglom.com/2009/03/28/enable-remote-connection-on-sql-server-2008-express/ I’ve got to point 10 in the guide and I am now stuck! I don’t have SQL Server Management Studio installed on my VPS. Anyway, this has left me with two options:
Install SSMS
Find another way to do point 10 onwards in the guide without having SSMS installed
I tried installing SSMS on my VPS using the Web Platform Installer but it keeps failing. I don’t know why it’s failing because it doesn’t seem to give a reason why. Does anyone know how I could allow remote connections a different way?
The version of SQL Server installed on my VPS is SQL Server 2008 R2 Express.
Update:
I have tried to disable the firewall on both my laptop and VPS to see if it is a firewall issue. This made no difference to the error message.
Another Update:
Having now been able to install SSMS (I installed directly from the website rather than using the WPI), I have been able to check that the server is configured to allow remote connections (I went to SSMS, connected to the SQL Server instance, right-clicked on the connection, clicked Properties, went to the Connections tab. "Allow remote connections to this server" is already ticked).
SOLUTION
Thanks to everyone for helping me get to this solution! I've finally managed to get it to work! I followed Filip De Vos's advice and opened the ports in the Firewall on my VPS and then I received a different error message. This led me to investigate further and I found that I was using the wrong credentials to login! So I've set a password for the sa user and I've managed to login using that! Thanks again!
To enable mixed authentication you can change the following registry key:
HKLM\Software\Microsoft\Microsoft SQL Server\MSSQL.1\MSSQLServer\LoginMode
Update the value to 2 and restart the Sql Server service to allow mixed authentication. Note that MSSQL.1 might need to be updated to reflect the number of the SQL Server Instance you are attempting to change.
A reason for connection errors can be a virus scanner installed on the server which blocks sqlserver.exe.
Another reason can be that the SQL Server Browser service is not running. When this service is not running you cannot connect on named instances (when they are using dynamic ports).
It is also possible that Sql Server is not setup to listen to TCP connections and only allows named pipes.
In the Start Menu, open Programs > Microsoft SQL Server 2008 >
Configuration Tools > SQL Server Surface Area Configuration
In the Surface Area Configuration utility, click the link "SQL Server
Configuration Manager"
Expand "SQL Server Network Configuration" and
select Protocols.
Enable TCP/IP. If you need Named Pipes, then you can
enable them here as well.
Last but not least, the Windows firewall needs to allow connections to SQL Server
Add an exception for sqlserver.exe when you use the "Dynamic Port" system.
Otherwise you can put exceptions for the SQL Server ports (default port 1433)
Also add an exception for the SQL Server Browser. (udp port 1434)
More information:
How to: Configure a Windows Firewall for Database Engine Access
Server Connectivity How-to Topics (Database Engine)
As a last note, SqlLocalDB only supports named pipes, so you can not connect to it over the network.
In addition to configuring the SQL Server Browser service in Services.msc to Automatic, and starting the service, I had to enable TCP/IP in: SQL Server Configuration Manager | SQL Server Network Configuration | Protocols for [INSTANCE NAME] | TCP/IP
Launch SQL Server Configuration Manager on your VPS.
Take a look at the SQL Server Network Configuration. Make sure that TCP/IP is enabled.
Next look at SQL Server Services. Make sure that SQL Server Browser is running.
Restart the service for your instance of SQL Server.
Open the SQL Server Configuration Manager....
2.Check wheather TCP and UDP are running or not....
3.If not running , Please enable them and also check the SQL Server Browser is running or not.If not running turn it on.....
Next you have to check which ports TCP and UDP is using. You have to open those ports from your windows firewall.....
5.Click here to see the steps to open a specific port in windows firewall....
Now SQL Server is ready to access over LAN.......
If you wan to access it remotely (over internet) , you have to do another job that is 'Port Forwarding'. You have open the ports TCP and UDP is using in SQL Server on your router. Now the configuration of routers are different. If you give me the details of your router (i. e name of the company and version ) , I can show you the steps how to forward a specific port.
I had the same issue where my firewall was configured properly, TCP/IP was enabled in SQL Server Configuration Manager but I still could not access my SQL database from outside the computer hosting it. I found the solution was SQL Server Browser was disabled by default in Services (and no option was available to enable it in SQL Server Configuration Manager).
I enabled it by Control Panel > Administrative Tools > Services then double click on SQL Server Browser. In the General tab set the startup type to Automatic using the drop down list. Then go back into SQL Server Configuration Manager and check that the SQL Server Browser is enabled. Hope this helps.
Disable the firewall and try to connect.
If that works, then enable the firewall and
Windows Defender Firewall -> Advanced Settings -> Inbound Rules(Right Click) -> New Rules -> Port -> Allow Port 1433 (Public and Private) -> Add
Do the same for Outbound Rules.
Then Try again.
I recently upgraded from SQL 2008 R2 to SQL 2012 and had a similar issue. The problem was the firewall, but more specifically the firewall rule for SQL SERVER. The custom rule was pointed to the prior version of SQL Server. Try this, open Windows Firewall>Advanced setting. Find the SQL Server Rule (it may have a custom name). Right-Click and go to properties, then Programs and Services Tab. If Programs-This program is selected, you should browse for the proper version of sqlserver.exe.
If you have more than one Instances... Then make sure the PORT Numbers of all Instances are Unique and no one's PORT Number is 1433 except Default One...
Open SQL Server Configuration Manager.
Click SQL Server Services, on the right side choose the server you've created during installation (by default its state is stopped), click once on it and a play button should appear on the toolbar. Click on this play button, wait til its state turns to "Running". Now you're good.
Open SQL Server Management Studio; switch the "Server Type" to "Database Engine" and "Authentication" to "SQL Server Authentication". The default login is "sa", and the password is the password that you chose on creating the server. Now you're good to work.
In my case the problem was caused by the inconsistency between computer names. In system settings my computer was named with some long name, but apparently the name used for some certain communications was trimmed.
I changed the name in the settings to a shorter one and it worked.
I had built both a console app and a UWP app and my console connected fine, but not my UWP. After hours of banging my head against the desk - if it's a intranet server hosting the SQL database you must enable "Private Networks (Client & Server)". It's under Package.appxmanifest and the Capabilities tab.Screenshot
Before download the last version and update your sql server to fix errors of TLS 1.2 on Sql Server 2012. For more information, check here.
I have an SQL Server 2008 hosted on a different computer in a different domain. I am able to ping to this machine using the IP address, but not using the machine name. I have also checked the settings of the sql server instance and it is configured to provide access to remote connections.
(Allow remote connections, tcp/ip enabled)
When I try to find this server using Sql server management studio 2008 or VS 2008, I get the error saying that the server cannot be found.
what could be the reason for this?
Please check SQL Browser service is running.
Please make sure you are providing valid authentication details.
Also make sure that TCP/IP connections are allowed by the SQL Server instance by checking the SQL Server Configuration Manager. If you are using an express version of SQL Server then all remote connections are typically disabled by default.
You need to create a trust relationship between the domains I think, it's been a while since I've done things between domains.
Windows Firewall will block SQL Server connection requests from a client machine by default. These are the steps I normally do to allow SQL Server through Windows Firewall:
Windows Firewall-> Allow app or feature through Windows Firewall-> Change
Settings-> Allow another app-> Browse to SQL Server exe (eg: C:\Program
Files (x86)\Microsoft SQL
Server\MSSQL10.SQLEXPRESS\MSSQL\Binn\sqlservr.exe)-> Open-> Add.
Windows Firewall-> Allow app or feature through Windows Firewall-> Change
Settings-> Allow another app-> add SQL Brower service by going to
C:\Program Files (x86)\Microsoft SQL Server\90\Shared\sqlbrowser.exe.
SQL Server configuration Manager-> SQL Server Network Configuration->
Protocols for Your_SQL_Instance-> Right click TCP/IP on the right pane
and enable.
The SQL Server instance does not need to be configured to run on 1433 and therefore no need to open the 1433 port through the firewall. SQL Browser will find it for you whichever port it is running on.
How do you access a SQL Server 2005 Express Edition from a application in a network computer?
The access I need is both from application (Linq-to-SQL and ODBC) and from Management Studio
See this KB Article. How to configure SQL Server 2005 to allow remote connections.
Oh, and remember that the SQLServer name will probably be MyMachineName\SQLExpress
If you're running it on a 2k3 box, you need to install all updates for Sql Server and the 2003 server.
Check the event logs after you start the Sql Server. It logs everything well, telling you if its being blocked, and where it is listening for connections.
From a remote machine, you can use telnet to see if a sql server is listening for remote connections. You just need the IP and the port of the server (default is 1433). From the command line:
telnet 192.168.10.10 1433
If you get a blank screen, its listening. If you get thrown back to the command prompt, something is blocking you.