Symptoms
When you attempt to connect to a Microsoft Access 2000 database by using either the standard Data control or the Data Form Wizard, you see the following error message where ‘…\databasename.mdb’ is the absolute filename of the Access 2000 database:

Unrecognized database format ‘…\databasename.mdb’”
Resolution
The standard Data control uses Data Access Object (DAO) 3.51 to connect to Access databases by using the Jet 3.51 engine.
The Data Form Wizard uses the Jet 3.51 OLE DB Provider to connect to Access databases by using the Jet 3.51 engine.
The Jet 3.51 engine can connect to Access database versions prior to Access 2000, but cannot connect to Access 2000 databases.