This question already has answers here:
Cannot Connect to Server - A network-related or instance-specific error
(54 answers)
Closed 4 years ago.
I received this error when trying connecting to a MS SQL Instance.
A network-related or instance-specific error occurred while establishing a connection to SQL Server.
Can anyone suggest how to fix this error?
This error mostly occurs when the server name provided is wrong.
Check the server name and make sure it is correct
Try to connect to the server by pinging from cmd
ping servername
Related
We have 4 servers, three of which are the main servers that contain SQL Server databases, and we are going to the mobile app on server 4 so that our users can connect to their database on their phones. Server 4 has an intermediary role, but now the problem we have is that we can not register data through Server 4 and it gives an error. I checked the firewall and SQL Server security settings, but this problem still persists and I get this error:
Microsoft.Data.SqlClient.SqlException (0x80131904): 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: SNI_PN11, error: 26 - Error Locating Server / Instance Specified)
I also checked the remote connection settings and it is active
Please check whether you can you ping other servers from server 4 to ensure there is no net work level problem. Then you need to allow remote connection in all those servers.
Below link might be able to give you more clarity on this issue:
Why am I getting "Cannot Connect to Server - A network-related or instance-specific error"?
When I have tried to connect to localhost and it was displayed the message about
"mssql:Error 2: 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)".
How can I fix it?
I have tried to follow the solution technique given by "Why am I getting "Cannot Connect to Server - A network-related or instance-specific error"?" but i can't find the location of vscode mssql extension configuration tool and SQL Server Configuration Manager?
You may be changed your computer name. if you changed your computer name then back to set initial name of computer. Then restart your Sql Server(MSSQLSERVER)service.
This question already has answers here:
Cannot Connect to Server - A network-related or instance-specific error
(54 answers)
Closed 4 years ago.
I'm trying to connect to a remote SQL Server 2014 for development purposes. To simplify i'm testing inside SQL Server Management Studio using Windows authentication, but i get the error below :
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 already enabled TCP/IP on SQL Server Configuration Manager. Firewall is disabled.
I can ping the remote hostname. Property 'Allow remote connections to this server' is checked.
Anything more to check ?
Thanks
Check if your server allows connections via "Allow remote connections to this server" in the database properties page -> Connections. Make sure you can ping the server from the machine you are trying to connect from to ensure the SQL Server is reachable. Make sure that port 1433 is open on your SQL Server.
This question already has answers here:
Error in update-database command in code first migration
(10 answers)
Closed 4 years ago.
I have and ASP.NET MVC website working fine with my SQL 2016. I mean there is no problem with ConnectionString in the web.config file!
But the problem is where I add-migration and wanna to Update-Database via Package Manager Console.
I get 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
What can cause? the connection string is 100% correct! the SQL server is working with live app!
why couldn't EF connect to that?
.NET Framework version: 4.7.2
SQL Server version : 2016
OS: Windows 10
Are you using DataLayer. If you using Update-Database command at DataLayer (look for Default Project at top of Package Manager Console) you should add your connectionstring to DataLayer's app.config file.
EDIT;
Update-Database -Verbose
-ConnectionString "CONNECTIONSTRING"
-ConnectionProviderName "System.Data.SqlClient"
-StartupProjectName WEBSITE_PROJECT -ProjectName MIGRATION_PROJECT
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.