I set my Firefox general.useragent.override to Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:39.0) Gecko/20100101 Firefox/39.0 which sufficiently fooled the downloader at https://portal.office.com/account# where I was presented with the option to download for 32 or 64 bit Windows. I chose 64 bit and downloaded OfficeSetup.exe. However, back at Crossover it says the only compatible bottle type is Windows 7 32 bit. Why is that? Is that fixed for all Office365 and should I therefore go back and download the 32 bit version instead?