Reinstalling Microsoft Office 365 and updating both Quickbooks and Office allowed me to export reports as Excel.
Please add this to the "Excel is Greyed Out" page and see if Tech Support can figure out what caused 32 bit to work when 64 bit didn't.
Thanks again for all the support today.
I tried clean installs, updating, disabling UAC, and restarting my computer. Nothing worked until I reinstalled MS Office as the 32 bit instead of 64 bit.
