oledb connection exception

Question

This is my code

string connectionString = @"Provider=SQLOLEDB;Data Source=Machine Name;Initial Catalog=MyTestDatabase;";
OleDbConnection conn = new OleDbConnection(connectionString);
DataTable result = new DataTable();
try
{
    conn.Open();
    OleDbCommand cmd = new OleDbCommand("get_holidays", conn);
    cmd.CommandType = CommandType.StoredProcedure;
    OleDbDataAdapter adapter = new OleDbDataAdapter(cmd);
    adapter.Fill(result);
}

$exception {"Invalid authorization specification"} is thrown during conn.open().

Answer 1

Connection string format:

Server=myServerAddress;Database=myDataBase;User ID=myUsername;Password=myPassword;Trusted_Connection=False;

or

Data Source=myServerAddress;Initial Catalog=myDataBase;Integrated Security=SSPI;

Answer 2

Add Integrated Security=SSPI to your connection string especially when username and password are not specified. In this case current Windows account credentials are used for authentication.

Provider=SQLOLEDB;Data Source=ServerName;Integrated Security=SSPI;Initial Catalog=databaseName

Answer 3

Try this connection string

Provider=SQLOLEDB;Data Source=Machine Name;Initial Catalog=MyTestDatabase;Integrated Security=SSPI

If will not work locally - then you have no access to your Sql Server

Answer 4

no username and password in connection string