Can't make connection to MS SQL database.

[qadeer37]

System.Data.SqlClient.SqlException was unhandled

Class=20
ErrorCode=-2146232060
LineNumber=0
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)"
Number=-1
Server=""
Source=".Net SqlClient Data Provider"
State=0

 

[jmcilhinney]

The error message tells you to do two things. Have you done them?

 

[qadeer37]

I have rechecked the first condition and I think its not because of that but how to change configuration of SQL Server to allow remote connections

 

[JohnH]

change configuration of SQL Server to allow remote connections - Google Search