I have been looking for a solution to the excel exporting issue for two weeks.  I consulted with two support agents and no one gave this solution.  I uninstalled and reinstalled so many times, but I finally saw the 32-bit suggestion and it worked.  Unstalled Office 365 and reinstalled in 32-bit and it works.  Thank you so much.  This is a big issue I hope they resolve it for everyone soon.