Launch the program and run a default scan to see which version of the MDAC you have installed. Microsoft provide a tool for checking the MDAC subsystem to check to see if it is installed correctly. Using ComponentChecker to verify the integrity of MDAC components A damaged MDAC installation, particularly when it affects the Jet component, can lead to a large number of ambiguous errors and can leave the computer unusable. The MDAC is a critical peice of the Windows infrastructure because among other things it provides the handlers for connecting to and modifying the Windows SAM. Under certain situations the ODBC subsystem in Windows can be corrupted For example, during an application install part of the driver set is overwritten set but not the whole thing because some of the files are locked by another process. Forcing a reinstall of the Microsoft Data Access Components
