OLE error 80040E4D with Firebird database connection

Using TC (new project) and ODBC 64-bit, use the following script with the appropriate values to query your database and test the connection

function FireBirdDB()
{
    var AConnection = ADO.CreateConnection();
    AConnection.ConnectionString = "DRIVER=Firebird/InterBase(r) driver; User ID=sysdba; Password=letmein; DBNAME=employee;";
    AConnection.Open();
    
    var rec = AConnection.Execute("SELECT * FROM employee;");
    while (!rec.EOF) {
        Log.Message(rec.Fields.Item("FIRST_NAME").Value);
         rec.MoveNext();
    }

    AConnection.Close();
}

Check that the file exists, C:\FireBird\400-Environment\400-Environment\2.34\DbFirebird\Test.fdb and that you can connect via Firebird ISQL tool. Check the port number is not being blocked.