As far as I know, the format of files generated by either the 32-bit version or the 64-bit version of Excel is exactly the same - so referring to '32-bit files' is a little misleading. It's the method of connecting to the file that needs to be 32-bit.
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.