When downloading Office 2010, you are presented with 32-bit (x86) and 64-bit (x64) options. Choosing the 64-bit ISO is beneficial if:
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An ISO file is simply the installation medium; it does not grant a license to use the software. To activate Office 2010 Professional Plus, you must possess a genuine product key. Microsoft Office 2010 Professional Plus 64-bit Iso Download
You can no longer download the official ISO directly from Office.com. You would need to use the "Microsoft Software Download" page for legacy media, which currently only offers offline installers for Office 2013 and later (via specific back channels). For Office 2010, the official digital locker is closed. When downloading Office 2010, you are presented with
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