How to disable MDAC in Windows 98SE

How do you disable MDAC in Windows 98se?
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First download the latest version from

Then do the following :
There is no uninstall for MDAC ODBC in the add/remove programs so you must use the original MDAC_TYP.EXE source to rollback MDAC.  You can download this from

Once Downloaded run MDAC_TYP.EXE /t:temp path /c
Example MDAC_TYP.EXE /t:c:\mdac /c
This extracts the files to a folder called c:\mdac or whatever you called it.
Then from that folder run dasetup.exe /u from your folder
Example c:\mdac\dasetup.exe /u
This will uninstall your MDAC

This is what Microsoft has to say :

"Uninstall MDAC. In rare circumstances you may need to completely un-install MDAC before continuing with re-installation. For example, if you want to remove a later version of MDAC and install an older version of MDAC, you cannot over-install the older version (the MDAC installer will not over-write a newer DLL version with an older version dll). Also in cases where all of the above recommendations fail on a normal setup, re-configuring MDAC is a good next step.

The MDAC setup program for MDAC versions before 2.6 does not have a built-in un-install feature. Microsoft Product Support has a Component Checker tool designed to diagnose and re-configure (un-install and re-install) MDAC.

NOTE: MDAC 2.5 comes preinstalled on computers with Windows 2000 and Windows Millennium Edition. Currently, you cannot use Component Checker to uninstall MDAC from a computer running Windows 2000 or Windows Millennium Edition. MDAC 2.6 provides its own uninstall functionality, which is documented in the MDAC 2.6 Setup FAQ available at the following Microsoft Web site:



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ewhitakerAuthor Commented:
Hi Dan,

Thank you so much for your response.  I am really in a rock and a hard place with this one.  I will try your suggestion later today or Thursday and let you know.  Judging by your response it is not as simple as I thought it might be so I'm going to up the point value for you.

Thanks again,
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