.NET Core API 无法连接到 MS LocalDB

Question

I am writing a .NET Core 2.1 web API using MS LocalDB. I can connect to my DB fine using SSMS and the server name (localdb)\\MSSQLLocalDB with Windows Authentication.

The API fails to connect with 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: SQL Network Interfaces, error: 50 - Local Database Runtime error occurred. Cannot create an automatic instance. See the Windows Application event log for error details.

My connection string is:

Server=(localdb)\\MSSQLLocalDB;Database=Foo;Trusted_Connection=True;MultipleActiveResultSets=true

As a side note, I tried to check my LocalDB version with sqllocaldb v but got the following error:

Windows API call "RegGetValueW" returned error code: 0.

Is my LocalDB installation completely borked?

Answer 1

its kinda late but i am trying this for 2 days and finally found the answer.

1. When app is running on IIS --> go to advance setting in the application pool, then on change "Process Model->Load Profile" to TRUE;

2. when app is running on Kestrel, a. connection string "Data Source=(localdb)\\mssqllocaldb"... etc

hope this help the others.