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: 26 - Error Locating Server/Instance Specified)
Anyone can help me with this? I am using SQL Management Studio 2012. I already tried opening sql server manager but I dont see any SQLEXPRESS server in there. Im just using localdb. Sorry guys im just a newbie in web development.
This is my connection string
add name="MyCon2"
connectionString="Server=Villar-PC\Justin;Database=DBNAME; Integrated Security=true;>
Run services.msc and check sql server (or express depending on what you have) service. It should be running. If not, start it and check.
Also check if the database you are mentioning exists
Edit: If you are using sql localdb, you can refer to http://www.asp.net/mvc/overview/getting-started/introduction/creating-a-connection-string for the connection string
<add name="MovieDBContext"
connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\Movies.mdf;Integrated Security=True"
providerName="System.Data.SqlClient"
/>
Related
I've got problem with connecting SQL Server by SQL Server Management Studio. I installed the latest version. I want to connect by windows authentication. I tried server name like:
computer_name\SQLEXPRESS
localhost\SQLEXPRESS
127.0.0.1\SQLEXPRESS
But it still doesn't work. I'll be glad for any help with this.
error message:
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: 26 - Error Locating Server/Instance
Specified) (Microsoft SQL Server, Error: -1)
I am new to Blue Prism Version:5.0
I a have been using BP since few days suddenly when i am trying to login to the application both the UserName and Password fields were grayed with an
Warning: Couldnt connect to database "Default Connection"
When I have opened the SQL management studio when trying to connect to database getting the error as:
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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1).
Any suggestion will be helpful
Thanks in advance
With Regards
Harsha Vardhan
Thanks all
What was the problem I too don't know but with a restart everything was set and now I am able to connect to SQL.
Trying to figure out the correct connection string for a SQL Server Express database. Trying to publish my app to IIS and test before publishing to my hosting site.
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: 26 - Error Locating Server/Instance Specified)
I started here and also used connectionstrings.com. I also started reading the deploy asp.net app using SQL Server Compact article here
Using this connection string
Data Source=.\\SQLExpress;AttachDbFilename=H:\DB\Guestbook.sdf;Integrated Security=True
I get the above error
This connection string
<add name="DefaultConnection"
connectionString="Data Source=.\SQLEXPRESS;Integrated Security=SSPI; database=Guestbook; AttachDBFilename=|DataDirectory|Guestbook.sdf"
providerName="System.Data.SqlClient" />`
throws a trust level error. I've changed to medium and full and still get one of the two errors.
I've tried a variation of a few different strings with no luck.
Thanks
Please verify that SQL Service is started in services.msc and use the complete instance with the hostname ej: HOSTNAME\SQLEXPRESS
The file extension indicates that this is not a SQL Server Express database, so you must use:
Data Source=<Full path to file>
or
Data Source=|DataDirectory|Guestbook.sdf
Am facing a problem with using SQL server 2012 along with VS 2012 ,, when I try to make new database it gives me this 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) (Microsoft SQL Server, Error: 2)”
I've tried to install the SQL Server Express 2012 again but still the same problem.
any suggestions ?
thanks in advance .
Most Probably you are something missing in ConnectionString, might be server name
open sql server and check server name.
working connectionString:
I recently added a second site to my server. That site gives me the dreaded:
System.Data.SqlClient.SqlException: 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: 26 - Error Locating Server/Instance Specified)
I have no idea why I am getting this. I've gone through this and this to no avail. This is a new MVC4 application I have at beta.vinformative.com in IIS 7. The other site is a MVC3 site at vinformative.com. It is running fine. Both of their databases have the exact same connection string and they are both on the same SQL server. I've given the same user mapping and role membership for NT Authority\Network Service to both databases.
Here is what I've tried so far:
MSSQLSERVER SQL Server service is running along with SQL Server Browser, and SQL Server Agent
I've added a firewall inbound rule for SQL Server browser
Made sure TCP/IP is enabled in sql server configuration
Added port 1433 TCP to the firewall
Enabled remote connection to db server
Successfully pinged the machine
Used portqry to see the db server on UDP 1434
I can connect to the site locally when I am remotely logged into my server. Furthermore, I have an ELMAH instance in the application for error logging and that is updating the database correctly. I feel like I am taking crazy pills because this should be working and I can't find an outright error. Please help!
Here is my connection string
<add name="vfContext" connectionString="Data Source=vinformative;Initial Catalog=vf3;Integrated Security=True" providerName="System.Data.SqlClient" />
Could be EF - see here.
Also, remote access cannot work with "Integrated Security=True" as far as I know, should use "User ID=******;Password=****;Integrated Security=False".