This is a question that we receive quite frequently.
I am about to install Microsoft Office (2013 or 2010 or 365). Should I choose 32 or 64 bit?
The answer is very simple.
Unless you are an accountant, scientist, Nobel prize winner for mathematics or similar with need to use HUGE Excel files, don’t touch the 64 bit version, especially if you use any third party add-ins, such as the ones we provide.
And this recommendation is mirrored by Microsoft (albeit in different wording!):