[Solved] SQL Server Management Studio Error: SQL Network Interfaces, error: 25 - Connection string is not valid

Question

HiPlease I cannot connect to server via SSMS Here is the error that I got in the SQL Server Management StudioCannot connect to SQLEXPRESSAdditional informationA network related or instancespecific error occurred while establishing a connection to the SQL Server The server was not found or was not accessible Verify that the instance name is correct and that the SQL Server is configured to allow remote connections provider SQL Network Interfaces error 25  Connection string is not v

dharmendr · Accepted Answer

Hi  RichardSaAs the error explains your Connection string is not valid1 You need to check in your SQL Server Configuration Manager what instances you have installed2 Check your Authentication whether its Windows or SQL Server2 If you are using local MS sql database then you can use dot instead of complete server name SQLEXPRESS4 You can also try localhost localhostSQLEXPRESS

[Solved] SQL Server Management Studio Error: SQL Network Interfaces, error: 25 - Connection string is not valid

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