I'm having trouble connecting to a freshly installed instance of SQL Server 2014 Express. I'm not even totally sure what information you would need to help, so please bear with me as I'm very much an amateur. If I can provide anymore information to help, I'd be glad to.
The error I get is always the same,
"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 server currently running SQL Server 2014 Express is Windows Server 2008 R2, with all patches sent out by Microsoft. This is a personal server at my home, so I can do whatever needs to be done with it to make this work.
To connect, I've tried using Visual Studio Community 2013, as well as the System.Data.SqlClient namespace in C# and in PowerShell.
I've made sure it isn't the firewall causing the problem. I set the rules properly, and when it still didn't work, I turned the firewall off completely. Same issue, no connection.
Here are a few examples of connection strings I've tried in .NET. I've removed the server, instance, userid, and password from these strings, and I'm sure I have those correct
Data Source=SERVERNAME\INSTANCENAME;Initial Catalog=Requests;Integrated Security=False;User ID=USERID;Password=PASSWORD
Data Source=SERVERNAME;Initial Catalog=Requests;Integrated Security=False;User ID=USERID;Password=PASSWORD
Server=SERVERNAME\INSTANCENAME; Database=DATABASE; User ID=USERID; Password=PASSWORD
Server=SERVERNAME; Database=DATABASE; User ID=USERID; Password=PASSWORD
If anyone has the time and patience to help a newbie sort this out, I'd really appreciate it. I'm using this setup to teach myself some SQL and ASP.NET MVC 5 development, and having a minilab at home would be awesome.
Thank you for your time.
First off, open services.msc and scroll down to SQL Server, and ensure its started.
If its not running modify to start automatically, and then start it.
Once it's running, close services panel, and run ssms.exe (management studio) and try connecting to Server Name: <machinename> or Server Name: <machinename\sql2014> [no <>]. You can also click the Server Name drop down list, and select BROWSE to see if your instance is listed - although I find this hit and miss.
Once you confirm its active and you are connected, follow this msdn page and follow the steps to enable tcp/ip connections.
From there you should have the details necessary to alter your connection string.
SQL Server Express does not have TCP/IP connections enabled by default, instead it uses Shared Memory which means that external/remote connections from another computer won't work.
Open SQL Server Configuration Manager (it's on your Start Menu) and choose Server configuration and enable TCP/IP. Also open the properties for TCP/IP and ensure you have both "Active" and "Enabled" set to True on the bindings you want to use.
I had a similar issue with a C# connection string that was no longer working after we migrated from SQL Server 2008 R2 on a Windows 2008 R2 Server to SQL Server 2014 on a Windows 2012 R2 Server.
I opened SQL Server Configuration Manager and Enabled Named Pipes, restarted the SQL Server and all was right with the world (at least for a few minutes!)
Make sure that your username and password are correct in case of Server Authentication mode.
Go to Sqlserver Management Configuration and start SQL server services if any are in stop mode.
Related
I am using Microsoft Visual Studio 2013 Ultimate.
I have one C# application connected with WSN to collect and save all sensor readings in database. It is working fine and stable.
Later I decided to add ASP.NET application (developed in the same software) so other computers in LAN can access my page and check measurements. I have one web form with few labels and buttons to ensure move forward and backward through the database table. It is working fine when I start it from Visual Studio but when I am trying to access from IIS it does not work.
I have this error (main part of the text):
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: 50 - Local Database Runtime error occurred. Cannot create an automatic instance. See the Windows Application event log for error details.
I have installed IIS and I can access "localhost" from my browser (IIS image appears). I published site with "Publish" option from Visual Studio.
I saw a few very similar questions on this forum but I did not find answer. Can you recognize what can be the problem?
Regards.
I think DeanOC's answer will apply if you are using your windows login to connect to sql server (in connection string you'll have Integrated Security=true) in which case:
In IIS select you web application on the righ side click Advanced Settings a dialogue box will pop up in it you can see which application pool your website is using
Close dialog go to Application Pools, right click the application pool you want and go advanced settings
Change the Identity of the application pool, under Process Model, to your current windows login.
http://www.codeproject.com/Articles/674930/Configuring-IIS-ASP-NET-and-SQL-Server
Everything is well explained. Just follow the procedure and it will be - Yeah, solved. :)
The message implies that either sql server instance you are pointing to is not running or that you are pointing to the wrong sql server instance. If you are able to run the application from visual studio then sql server should be running and that would imply that your connection string is wrong.
During publish, msbuild will run config transforms i.e. if build profile is set to release it will change the connection strings in web.config to those in web.release.config. Check your connection strings in the IIS website and also check you password is correct
You could enable TCP/IP in SQL Server Configuration.
Microsoft SQL Server xxx -> Configuration Tools -> SQL Server Configuration Manager -> Select TCP/IP. Right click and select enable
Therefore, you can connect successfully from your local computer but it fails when you access from IIS of other server.
I think you are trying to access the web page from another computer in the network and not sql server in which case you have to add a binding to your site. By default the site is only bound to localhost port 80 meaning it will only be accessible from within the same machine. You'll need a url with dns entries or a static ip address to use to connect to your machine. Check out IIS bindings:
http://blogs.technet.com/b/chrad/archive/2010/01/24/understanding-iis-bindings-websites-virtual-directories-and-lastly-application-pools.aspx
http://technet.microsoft.com/en-us/library/cc731692(v=ws.10).aspx
because you used attach Mode in this way when one of them is connected to your database other one cannot use it like open file. and only the one who is in the same sever could access to your database.
to solve this problem you have to add your database to your SOL server manager after that you could access to it from many devices use
this connection string
Data Source='server IP';Initial Catalog='database name';Persist Security Info=True;User ID='your user name';password='your password'
please follow this video
enter link description here
This question already has answers here:
How do I fix the error 'Named Pipes Provider, error 40 - Could not open a connection to' SQL Server'?
(33 answers)
Closed 3 years ago.
When I am trying to connect to my database in SQL Server Management Studio, I getting this error:
Provider named pipes provider error 40 could not open a connection to SQL Server error
After checking several answers on SO, I opened the SQL Server Configuration Manager
I found SQLSERVER (SQLEXPRESS) and all three options state >> STOPPED
I tried it starting by right clicking on it, but i got below error:
The request failed or the service did not respond in a timely fashion
How can I connect to the instance???
Well I have an easy solution for your question. Follow the steps:
Go to SQL Server Configuration manager
SQL Server Network Configuration:
Protocol for MSSQLSERVER
In the right pane split page you will have to disable VIA as follows
Shared Memory - Enable
Named Pipes - Enable
TCP/IP - Enable
VIA - Disable
Search for services in control panel,
there you will find and entry View Local Services in Admin tool section
select it that will show a window with all services in your system,
find your service SQLEXPRESS and click on Start. It should start your server instance :)
In Sql Server Configuration Manager program, start SQL SERVER, enable the TCP/IP connection. After, allow the port in the firewall to be sure that's ok.
It's a generic error so it can be a lot of things. I got this error once and when I added port number (1433) to my connection string everything started to work again.
<connectionStrings>
<add name="ConnectionString" connectionString="Data Source=Server,1433;Initial Catalog=Test;Integrated Security=SSPI;" providerName="System.Data.SqlClient"/>
</connectionStrings>
I have provided steps to fix your issue Provider named pipes provider error 40 could not open a connection to SQL Server error as below:
Confirm for working fine SQL Server Services services.
Confirm for working fine SQL Server (MSSQLSERVER).
Confirm for working fine SQL Server Browser.
Delete all your previous Aliases and now create new aliases as per your requirements.
Now assign your SQL Server Default Port 1433
Now click on Client Protocols in instance, click on TCP/IP in right pane, now click on mouse right click, open Property, here you can check for your default port of SQL 1433
Run your SQL Server Management Studio, then right click, click on property option and then click on Connections on tab, now check for Allow remote Connections to this server.
Confirm for Ping IP Host or not
Check for your Firewall setting not to blocking your SQL Server port
In my case, this was the solution.
I found out that I could connect using localhost**instancename**
So I uninstalled Database Engine component only.
Then I ran SQL Server installer and this time chose default instance option whereas before I had named the instance the same as my machine.
Now I can connect using localhost(which is setup in several application config files so I needed to still connect like this).
In my case, first I'm inserting/viewing/deleting data in my local SQL Server. Then at some point in development, the client wants to up the system(Windows Forms) in the server (network) so I've face to this kind of problem, what I check is the likes of this.viewEmployeeTableAdapter i delete that because it is still connected to the local db. I notice that because in my PC. The system is working properly whilst when im transferring it to other PC the
Provider named pipes provider error 40 could not open a connection to
SQL Server error
is appearing. So it's because I have a sql connection opening MY SQL Server while the other PC doesnt have.
This error has caused been popping up for me since installing .net 4.7 I had to alter my connection string to include TransparentNetworkIPResolution=False;
Server=server;Database=dbname;Uid=user;Pwd=pword;TransparentNetworkIPResolution=False;
Best idea is uninstall SQL and again Install SQL, Clear all temp files first and restart after that install. give a proper name to instance at a time of install.
I just downloaded the latest version of SQL Express 2012 but I cannot connect to localhost. I tried localhost\SQLExpress and Windows authentication but it gives me an error message saying cannot connect. Am I missing something here? I've used SQL Server 2008 before and I've never had issues connecting to localhost. It seems that it can't even find it. Also in the Services I only see a SQL Server VSS Writer. Is this the way it should be? Or am I missing something? Thanks
According to Aaron Bertand:
You need to verify that the SQL Server service is running. You can do this by going to Start > Control Panel > Administrative Tools > Services, and checking that the service SQL Server (SQLEXPRESS) is running. If not, start it.
While you're in the services applet, also make sure that the service SQL Browser is started. If not, start it.
You need to make sure that SQL Server is allowed to use TCP/IP or named pipes. You can turn these on by opening the SQL Server Configuration Manager in Start > Programs > Microsoft SQL Server 2012 > Configuration Tools (or SQL Server Configuration Manager), and make sure that TCP/IP and Named Pipes are enabled. If you don't find the SQL Server Configuration Manager in the Start Menu you can launch the MMC snap-in manually. Check SQL Server Configuration Manager for the path to the snap-in according to your version.
Verify your SQL Server connection authentication mode matches your connection string:
If you're connecting using a username and password, you need to configure SQL Server to accept "SQL Server Authentication Mode":
-- YOU MUST RESTART YOUR SQL SERVER AFTER RUNNING THIS!
USE [master]
GO
DECLARE #SqlServerAndWindowsAuthenticationMode INT = 2;
EXEC xp_instance_regwrite
N'HKEY_LOCAL_MACHINE',
N'Software\Microsoft\MSSQLServer\MSSQLServer',
N'LoginMode',
REG_DWORD,
#SqlServerAndWindowsAuthenticationMode;
GO
If you're connecting using "Integrated Security=true" (Windows Mode), and this error only comes up when debugging in web applications, then you need to add the ApplicationPoolIdentity as a SQL Server login:
otherwise, run Start -> Run -> Services.msc If so, is it running?
If it's not running then
It sounds like you didn't get everything installed. Launch the install file and chose the option "New installation or add features to an existing installation". From there you should be able to make sure the database engine service gets installed.
Goto Start -> Programs -> Microsoft SQL ServerYYYY -> Configuration Tools -> SQL Server YYYY Configuration Manager or run "SQLServerManager12.msc".
Make sure that TCP/IP is enabled under Client Protocols.
Then go into "SQL Server Network Configuration" and double click TCP/IP. Click the "IP Addresses" tab and scroll to the bottom. Under "IP All" remove TCP Dynamic Ports if it is present and set TCP Port to 1433. Click OK and then go back to "SQL Server Services" and restart SQL Server instance. Now you can connect via localhost, at least I could.
Note that this error can of course occur when connecting from other applications as well. Example for a normal C# web application Web.config connection string:
<connectionStrings>
<add name="DefaultConnection" connectionString="server=localhost;database=myDb;uid=myUser;password=myPass;" />
</connectionStrings>
in SQL SERVER EXPRESS 2012 you should use "(localdb)\MSSQLLocalDB" as Data Source name
for example you can use connection string like this
Data Source=(localdb)\MSSQLLocalDB;Initial Catalog=master;Integrated Security=True;
First try the most popular solution provided by Ravindra Bagale.
If your connection from localhost to the database still fails with error similar to the following:
Can't connect to SQL Server DB. Error: The TCP/IP connection to the host [IP address], port 1433 has failed. Error: "Connection refused: connect. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall."
Open the SQL Server Configuration Manager.
Expand SQL Server Network Configuration for the server instance in question.
Double-click "TCP/IP".
Under the "Protocol" section, set "Enabled" to "Yes".
Under the "IP Addresses" section, set the TCP port under "IP All" (which is 1433 by default).
Under the "IP Addresses" section, find subsections with IP address 127.0.0.1 (for IPv4) and ::1 (for IPv6) and set both "Enabled" and "Active" to "Yes", and TCP port to 1433.
Go to Start > Control Panel > Administrative Tools > Services, and restart the SQL Server service (SQLEXPRESS).
I had a similar problem - maybe my solution will help. I just installed MSSQL EX 2012 (default install) and tried to connect with VS2012 EX. No joy. I then looked at the services, confirmed that SQL Server (SQLEXPRESS) was, indeed running.
However, I saw another interesting service called SQL Server Browser that was disabled. I enabled it, fired it and was then able to retrieve the server name in a new connection in VS2012 EX and connect.
Odd that they would disable a service required for VS to connect.
First check SQL Server Service is Running or stopped, if it is stopped just start it, to do so..just follow the below steps.
1.Start -> Run ->Services.msc
Go to Standard tab in services panel then search for SQl Server(SQL2014)
"SQL2014" is given By me, it may be Another Name in your case
that's it once you start the SQL Service, you are able to connect local database.
hope it will help someone.
All my services were running as expected, and I still couldn't connect.
I had to update the TCP/IP properties section in the SQL Server Configuration Manager for my SQL Server Express protocols, and set the IPALL port to 1433 in order to connect to the server as expected.
After doing the steps which were mentioned by #Ravindra Bagale,
Try this step.
Server name: localhost\{Instance name you were gave}
Try changing from windows authentication to mixed mode
The problem for me was that I was not specifying .\. I was only specifying the name of the instance:
did not work: SQL2016
worked: .\SQL2016
This is odd I have a similar problem. I downloaded the package for SQL 2012 Express with Tools but the Database Engine was not install.
I donloaded the other one from the MS site and this one installed the database engine. After a reboot the services were listed and ready to go.
My situation
empty Instance Name in SQL Server Management Studio > select your database engine > Right Mouse Button > Properties (Server Properties) > Link View connection properties > Product > Instance Name is empty
Data Source=.\SQLEXPRESS did not work => use localhost in web.config (see below)
Solution: in web.config
xxxxxx = name of my database without .mdf
yyyyyy = name of my database in VS2012 database explorer
You can force the use of TCP instead of shared memory, either by prefixing tcp: to the server name in the connection string, or by using localhost.
http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnection.connectionstring%28v=vs.110%29.aspx
I had the same issue and I found that this happened after I installed an update for my SQL 2012. What fixed it for me was going into programs and features and running a repair on it.
Try changing the User that owns the service to Local System or use your admin account.
Under services, I changed the Service SQL Server (MSSQLSERVER) Log On from NT Service\Sql... To Local System. Right click the service and go to the Log On Tab and select the radio button Local System Account. You could also force another User to run it too if that fits better.
I have Visual Studio 2010, Sql Server 2008, Sql Management Studio and pretty much everything installed.
I can create a local database with Sql Server Compact and Windows authentication just fine. Now I'm a little perplexed, because I still have no idea how all of this works. I didn't use any connection strings, passwords or anything. While coding, I can clearly see that the DataContext class in C# when using LINQ to SQL needs a connection string. How can I test this on my own pc? Is it unreasonable that I want to test this kind of stuff throughly while not currently having hosted services on the Internet yet? And often times, I don't have so much access to the server when using shared hosting, so I can't learn very fast and not fully.
When trying to connect to different services through SQL management studio and Windows authentication and my local pc, I just get a connection error.
Error Number: 2
Severity: 20
State: 0
I don't think that the database engine is the appropiate service to connect to anyway based on what I read, I just thought that you would like to know what I tried.
I checked, and sqlservr.exe is running in the processes in the task manager. Also SQL Server VSS writer.
Basically, I would like to learn how SQl Server databases work. The books, wikipedia and msdn on this topic just enumerate a lot of cryptic services like the database engine, analytical services etc...
I can't find any basic information on how to actally create, connect and program with a real database on my own pc. I'm not even sure whether I'm supposed to work like this?
I read that Sql server compact only supports databases up to 2mb.
Is it not possible for me to work with "the real thing" on my local pc?
I'm very very new to all this, and I'm not getting anywhere with databases...
Thanks for any help!
See: no option for a full sql database.
Server seems to run, but why does it say Server express? I'm sure I have the full one.
Installing Visual Studio generally installs a SQL Server instance on your local machine.
It is acceptable to work with "the real thing" on localhost, since when changing server, only the connection string has to change.
You will have to install the right version of SQL Server Management Studio Express (SSMSE) for your version of SQL Server so that you can start it, authenticate and work with SQL Server.
You may also connect to your SQL Server using the Server Explorer windows from within Visual Studio. Menu View|Server Explorer, or else [CTRL]+[W], [L] to view it. Then, you may connect to a data server from this window using the connection buttons on top of it.
Click View|Server Explorer, to view it;
Server Explorer, click "Connect" button located on top;
Choose a data source dialog, Data Source, click Microsoft SQL Server;
Data Provider, select .NET Framework Data Provider for SQL Server, click [Continue];
Add a connection dialog, Server name, select the server you want to connect to (your [local machine name]\SQLEXPRESS might appear, or something alike);
Server connection, choose Windows Authentication;
Database connection, select the database you want to connect to, and click [Test Connection];
If the test succeeds, click [OK], and you're done!
Disclaimer
The names of menus or window title may differ a bit, but you should get it done anyway. That is because I have off my head translated from French to English what it actually says in French, working with a French Visual Studio.
EDIT #1
After having taken an eye out your screenshot, I would simply say that you only have to select Database Engine to connect to your SQL Server instance, by selecting the right server on which you wish to work.
The full database option you're looking for is Database Engine which designates a full SQL Server.
The others are for the different services such as:
SQL Server Reporting Services (SSRS);
SQL Server Integration Services (SSIS);
SQL Server Analysis Services (SSAS).
Feel free to ask further assistance as needed. =)
I'm trying to follow this example but I get an Exception related to the connection string telling me that the server was not found or was not accessible. The tutorial itself tells me on step 5 to "Change the connection string to point to your computer running SQL Server". I don't know if my SQL Server is running or not and if it is I don't know what would be the name of the server. I know I installed SQL Server when I installed VS 2010 (I did a full installation), so it should be somewhere. I haven't changed anything in the SQL Server configuration so everything should be on what is default.
If you installed SQL Server along with VS 2010, you have SQL Server 2008 Express edition on your machine, and it is installed by default as a "SQLExpress" instance, so your connection string would have to be something like:
server=(local)\SQLExpress;database=(whatever_you_want);integrated security=SSPI;
This would expect that database you specify to already exist on your server.
If you want to programmatically create a database, you would have to connect to the master database
server=(local)\SQLExpress;database=master;integrated security=SSPI;
and then run a SQL statement something like this from your app:
CREATE DATABASE (newDatabaseName)
You can check under services (start/run/services.msc) whether your SQL server is running or not; or in your start menu under "sql server configuration manager". pls check if named pipes and tcp-ip are enabled.