I am trying to connect to my SQL Server but I get this error
TITLE: Connect to Server
Cannot connect to BRIAN.
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: 2)
The system cannot find the file specified
This is my connectionstring so far
<connectionStrings>
<add name="DefaultConnection" connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-ImagesSample-20140730183036;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnet-ImagesSample-20140730183036.mdf" providerName="System.Data.SqlClient" />
</connectionStrings>
This is because wherever your application is cannot connect to the SQL server. This could be down to a whole manner of causes. Here are a few of the most common:
Is the machine hosting the SQL database actually switched on and running?
Are the appropriate SQL services running?
Try to connect to the SQL instance from the SQL machine itself?
Try to connect to the database server from your application server (dev box) using a different application - Management Studio or LinqPad perhaps?
Is your connection string right?
Is there a firewall protecting the SQL box?
Is there a firewall preventing outbound communication? Turn off firewalls and eliminate one by one
Is your connection string referring to the server by IP? DNS name? Is the DNS correct? You can usually check this by trying to connect to the server using the same details using a ping/nslookup/rdp
It's unlikely this sort of exception is caused by invalid credentials.
Do all you SQL server communication using TCP/IP. The default port of SQL Server installation is 1433. This port can be changed through SQL Server Configuration Manager. TCP/IP should be enabled for SQL Server to be connected.
Go to All Programs >> Microsoft SQL Server 2008 >> Configuration Tools >> SQL Server Configuration Manager >> Select TCP/IP
Related
An error occured while establishing a connection to the
server. When connecting to the SQL
server 2005, the 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)
I am using .NET framework provider for SQL Server and Visual Studio 2008.
Data Source=.\SQLEXPRESS;AttachDbFilename="";Integrated Security=True;User Instance=True
What am I missing here?
I know external references are bad, but it really does not get better than this:
http://www.connectionstrings.com/
as they say
Server=.\SQLExpress;AttachDbFilename=c:\mydbfile.mdf;Database=dbname; Trusted_Connection=Yes;
AttachDbFilename should be the path to the database filed (generally a .mdf) that you will be using.
Data Source=.\SQLEXPRESS;AttachDbFilename=c:\some.mdf;Integrated Security=True;User Instance=True
An error occured while establishing a
connection to the server. When
connecting to the SQL server 2005, the
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)
By default SQL Server Express disables remote connections via TCP/IP and Named Pipes, so you will need to enable these protocols in the SQL Server Configuration Manager (Start --> Programs --> Microsoft SQL Server 2008 --> Configuration Tools).
I also agree with Hogan about ConnectionStrings.com great site!
I'm having an issue with SQL Server, I have 2005 installed on my desktop as well as having SQL Server Management Studio installed..
I've checked and can see "SQL Server (SQLEXPRESS)" started in services.
I've tried to connect to "Local" and "SQLEXPRESS" but both fail to connect.
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)
Anything else I need to do to connect to it??
UPDATE
I seem to be getting a little further along now. Ive managed to connect to my server with SQL Server Management (FYI .\SQLEXPRESS did the trick) but now im having a issue with my connection string in my web.config
Ive im going to connect to this local sql server using windows authentication how do i need to structure it??
Something like this?
<add name="BensBoxing" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=BritBoxing_Alpha;Integrated Security=False;User Instance=True" providerName="System.Data.SqlClient"/>
This produces a error about
Login failed for user ''.
Check the sql log in the LOG directory of your instance - see if anything is going on there. You'll need to stop the service to open the log - or restart and you can read the old one - named with .1 on the end.
With the error you're getting, you need to enable TCP/IP or Named pipes for named connections. Shared memory connection should work, but you seem to not be using that. Are you trying to connect through SSMS?
In my log I see entries like this...
Server local connection provider is ready to accept connection on [\\.\pipe\mssql$sqlexpress\sql\query ]
As the comments said, .\SQLEXPRESS should work. Also worstationName\SQLEXPRESS will work.
Same as matt said. The "SQL Server(SQLEXPRESS)" was stopped. Enabled it by opening Control Panel > Administrative Tools > Services, right-clicking on the "SQL Server(SQLEXPRESS)" service and selecting "Start" from the available options.
Could connect fine after that.
I was having this problem on a Windows 7 (64 bit) after a power outage. The SQLEXPRESS service was not started even though is status was set to 'Automatic' and the mahine had been rebooted several times. Had to start the service manually.
Try to see, if the service "SQL Server (MSSQLSERVER)" it's started, this solved my problem.
Open Sql server 2014 Configuration Manager.
Click Sql server services and start the sql server service if it is stopped
Then click Check SQL server Network Configuration for TCP/IP Enabled
then restart the sql server management studio (SSMS)
and connect your local database engine
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?
I'm unable to connect to SQL Server 2005 from .NET. I'm getting the 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) ". The strange thing is, I'm able to connect through management studio using the same credentials (SQL Server authentication).
My connection string is: Server=servername;User ID=xxx;Password=xxx
I'm using the 2005 native client.
Also, I just realized Management Studio cannot connect if using named pipes, only TCP/IP.
What tells ADO.NET which protocol to use?
SQL Server 2005 may not be allowing inbound named pipes connections. This can be configured differently for the older SQL Server protocol and for the 2005+ Native Client. Check the SQL Server Configuration Manager on your database server.
(And yes, the Management Studio would still be able to connect to the remote database if named pipes were disallowed.)
i am having management stdio 2005 in my machine and im tring to connect to sql server 2008
i'm receiving the following message as the inner exception .
{"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)"}
can anyone please help
thanks,
vijay.
The protocol you're using (Named Pipes) is only valid if you're connecting to the local machine. If you're connecting to a remote machine, you need to enable the TCP protocol.
Other things to check:
Is your connection string correct? Server name spelled correctly?
Is any firewall allowing TCP traffic? The default port is 1433 for a basic setup.
Open up the SQL Server Configuration Manager
Expand the node "SQL Server Network Configuration"
Click on protocols node
Right click on "Named Pipes" -> Enable
Restart the SQL Server service
Make sure the database is configured to allow remote connections.
If using an instance, ensure you're pointing at that instance in your connectionstring.