I'm using Entity Framework core and after adding migrations, while updating database I got this error.
Error while updating database:
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: 52 - Unable to locate a Local Database Runtime installation. Verify that SQL Server Express is properly installed and that the Local Database Runtime feature is enabled.)
I have that problem i cannot connect to SQL Server.
I get this error:
Cannot connect to (localdb)\MSSQLLocalDB. 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. Error occurred
during LocalDB instance startup: unable to create the SQL Server
process. ) (Microsoft SQL Server, Error: -1983577844)
I have looked all over the internet, but all of them are solutions that don't work for me, they show something like you just need to connect to your server the right way, and then make a user login.
But how can I do that if I can't get into my server or database.
I can't get any further than this picture
I even tried through Services that some fix it through, or SQL Server Configuration Manager but I don't have any SQL Server Services.
As you can see on this picture
Btw it's saying there is no elements to show.
I have no idea to what I can do now.
I installed SQL server 2014 newly. When I am opening SQL Server Management Studio and giving localhost as server name then I am getting error 40 i.e.
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)
While installing the SQL Server there were no instances given by me so there is only default instance. I read many other posts here in Stack overflow and also found that there is no service like MSSQLSERVICE in my services that I can run..
I am not sure what has gone wrong.
This error was returned when I tried to connect with server.
Error description 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. (provider: SQL
Network Interfaces, error: 26 - Error Locating Server/Instance
Specified) (Microsoft SQL Server, Error: -1)
First you need to check whether SQL SERVER service is running in your system or not .For checking follows below steps in Windows.
Step 1 : Type "window" button + R ,This will open Run prompt.
Step 2: Type "services.msc" in Run prompt and hit the enter.
Step 3: Find SQL SERVER service from there.
Step 4.Start this service.
Following these steps, I have resolved this problem in my machine.
Thanks
Check your SQL Server Service is Running or not
if the server is in remote location check port 1433 is not blocked by the firewall.
if this is not the default instance, Check SQL Server Browser is running or not
Check the network connection on client PC, and verify the connection to the server using PING or TELNET
Check whether TCP/IP and Named Pipes are enabled or not.
for more details Why am I getting "Cannot Connect to Server - A network-related or instance-specific error"?
To solve 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 Go to Sql Server Configuration Manager>>Sql Server Services Sql Server>>Right click on the Sql Server(MSSQLSERVER) and Start the Process.As show belowenter image description here
If you are trying to connect to your Sql Server running on MacOS via Docker, then make sure that Sql Docker container is running and then you will be able to connect to your Sql Server using Azure Data Studio as shown in attached image Sql Container inside Docker
I used the following windows command to share my local database : -
sqlLocalDB share v11.0 IIS_DB
When trying to connect to the database via the database explorer in Visual Studio 2012 using the shared name I get the following 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)