Frequently asked questions about the installation of Microsoft Data Access Components (MDAC)

http://support.microsoft.com/kb/842193

What can I do if I must roll back to an earlier version of MDAC?

Caution Rollback might cause pre-existing applications to function incorrectly.

To initiate Rollback, run the Dasetup.exe file with the following command line:dasetup.exe /uNote The Dasetup.exe file is already installed on the computer.