If this is a system that you’re creating, you should think about using ADO anyway. So: What connection string are you using to open the database? How did you create the original DB and if you used Access, what version? If you’re using DAO then I assume you’re using JET as the driver, which opens a whole host of other questions about what versions you’re using and how you’re opening the database. Windows 7 has the latest version but that doesn’t mean that it has all the component to support legacy systems. Windows doesn’t like installing MDAC at a lower version than it has. One question, are you getting this on your development machine or the machine on which the application will eventually be run? DAO3.6 is part of the MDAC install and although you seem to be able to (re-)register the individual file, there are a lot more that comprise the MDAC system. Many files have dependencies on others that need to be installed as well.

Mdac Download Windows 7 X64 Microsoft announced the availability of Microsoft Data Access Components (MDAC) 2.7 Service Pack 1 (SP1).

This causes problems for applications that expect a version 3.0 database to be created. By default, with version 4.0 of the Jet ODBC driver, a version 4.0 database is created when you create a new database by using the CREATEDB keyword. To stay up to speed with the latest updates, check back with our website as often as possible. Version 4.0 of the Jet ODBC driver is included with MDAC 2.1. You can’t always just copy individual files to machines, register them and hope that it’ll work. Therefore, if you wish to apply this version, click on the download button and enable your network card.

Check mdac version windows 7