BE CAUTIOUS. Yes, the Office 2007 system driver works... but then later, when you start MS Access (at least at version 2016 32-bit), it automatically does a repair and reinstalls some Office components that apparently overwrite the system driver. The ability to read the XLSX files from ArcMap is removed.
And to add to the fun, any MXD that had links to the XLSX files now *SO* fails to open that you get the dialog to report it to ESRI. Also, If the last place you added data to ArcMap from was the XLSX file, then trying to simply add new data to a clean ArcMap session gives you a blank list, and you cannot navigate anywhere else. ArcMap's Add Data button is stuck looking in limbo-land. Even deleting my Normal.MXT template (to restore ArcMap to original configuration) DOES NOT fix that. Still trying to solve.