I've been busy going through many of the question asked under the same topic but none of them had solved my problem.
I have MS SQL 2012 standard (trial) is installed on my local PC. Also I have a MS SQL std. server 2005 is installed on a web server (Windows Server 2003) in different domain. Normally I can RDP the web server using the static IP address given by the Infrastructure provider.
Now I wanted to access my MS SQL server installed on the web server using the MS SQL management studio installed on my local PC. but I'm receiving the following error when I try to connect. I tried with the same IP which I used to log in to the server using RDP as the server name.
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)
I followed almost everything in this KB. But the windows firewall is disabled on the web server. while I'm waiting for Infrastructure provider to confirm there is no other network level firewall denies access for port:1433, I would like to know are there anything else that I'm missing here?
Problem has been resolved after forwarding the port TCP: 1433 on the router firewall.
Related
I'm trying to connect to SQL Server from my .NET application.
I tried it on my pc and one other pc with already installed sql server.
I needed to test my app and I started virtual machines (windows 7 and 8.1).
I am constantly getting 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: Named
Pipes Provider, error: 40 - Could not open a connection to SQL
Server)"
I tried everything that i found on internet that might help.
Nothing works for me.
Im using VirtualBox for virtual machines.
Is there might problem with that or even problem is because I'm trying to do it on VM. How can I resolve this?
Check this is this helps go to run -> sql server configuration manager then check sql server service are running and then client protocol enabled
When i try to remote connecto to my sql server i get this eror;
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)`
My sql server is running on my windows 8.1 single language edition machine. I also have iis server running on it. and i can view the page from remote machine with no problem. Here are the list that i have done;
I opened port 1433 and 1434 and forwarded them to my machine.
I closed all firewalls.
SQL browser is running
İ can ping my ip.
I can connect the sql server from office with just writing the ip 192.168.2.18. My instance name is . However i can not connect it from outside of the office. What is i am doing wrong what must be my server name when connecting to the instance . Can i connect it by just ip without writing any instance name?
I have two Win 7 64 bit machines.
On the first one I have installed SQL Server 2008 R2 Express and have no trouble connecting via Management Studio with Windows Auth and also via SQL Auth with a user I set up on the database.
On the second machine I am trying to connect to the database on machine 1 using Management Studio. I'm trying SQL Auth. I therefore obviously also can't connect to it via connection string in my .NET Code
I can ping the first machine from the second.
Things I have tried include the following:
On the machine the database is installed make sure the firewall is allowing connection on Port 1433
Made sure SQL Server service is running
Made sure SQL Server Browser service is running
Created an exception for sqlbrowser.exe in the firewall
Enabled TCP/IP Protocol through SQL Configuration manager
Allowed Remote connections in SQL Server Management Studio
The error I get 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
This is the connection string I use in code
Data Source=xxx.xxx.xxx.xxx\sqlexpress;Initial Catalog=dbName;User Id=myUser;Password=myPassword;
This can be caused by a number of reasons but I'm glad my suggestion about checking firewall ports (rather than just allowing a one-way exception for SQL Browser) led you to the answer: the firewall wasn't allowing the correct port # through.
If i remember correctly SQL Server disables remote connections by default.
Please check whether remote connections are enabled and enable them if not:
RMB on Server in Management Studio Object Explorer -> Properties -> Connections -> Allow remote connections...
I might be the million'th person posting about this, but others' solutions haven't helped me. I have a database on Microsoft SQL Azure. I an trying to connect to it using the Visual Studio 2010's "Connect to Database" Tool.
From my Windows 7 machine, I can connect to it very easily. But from my Windows Server 2008R2 machine i am getting the classic 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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
All the posts around the web seem to be focussing on the problems on the server side, no one cares if the client goes rogue. :(
Thanks for the replies.
I have seen similar problems with VS2010 DB Tool and Windows Server so I would not suggest try using SSMS 2008 R2 (must be R2). Once you have download SSMS 2008 R2 and configured properly to work on Windows Server it sure will work. In most of the case you really need to open SSMS settings to get it workon on Windows Server.
Next a few points to check:
Verify that the telnet is working from your Windows Server Machine:
c:>telnet _your_sqlazure_database_name.database.windows.net 1433
Disable your real time security and the try again
Finally following the link to keep applying settings in your Windows Server and SSMS which are applicable and I am sure it will work:
http://www.mssqltips.com/sqlservertip/2340/resolving-could-not-open-a-connection-to-sql-server-errors/
One issue is that you need to connect via tcp, not named pipes (per your error message).
Are both servers behind the same firewall (e.g. the same external IP address)? The SQL Azure firewall needs to be configured to allow access from remote IP addresses.
I am new to managing servers but I have just been given full access to set up an MS SQL Database on win server 2003. I have created a Database successfully and can connect locally (via remote desktop server)
Problem is I can't connect to the database from my personal computer (remotely, via ms sql server management studio). I have followed several tutorials such as: http://blog.sqlauthority.com/2009/05/21/sql-server-fix-error-provider-named-pipes-provider-error-40-could-not-open-a-connection-to-sql-server-microsoft-sql-server-error/
The error I am receiving is:
Cannot connect to 'servername'
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)
Any help will be great, thanks!
"SQL Server is configured to allow remote connections"
You need to enable remote tcp/ip connections in sql surface area configuration. It's new in 2005 and then dropped in 2008.
If that doesn't work, you either have a network issue are are perhaps giving the wrong name - maybe you installed a named instance?