We sometimes face issues while connecting to .accdb Access Database instead of .mdb Access Database.
For this, we use different Provider while declaring our Connection String.
string connectionString = @”Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\\DailyExpenses.mdb“;
For .mdb, we use Microsoft.Jet.OLEDB.4.0 Provider.
For .accdb, we use Microsoft.ACE.OLEDB.12.0 Provider.