We cannot upgrade for a few months, but have many users who cannot (or will not) install Office 32-bit as required by older ALM versions (16.0 and below).  When we try to use Excel Add-in with Excel 64-bit, it throws errors.  Can we "dupe" something to make it work anyway?

When trying to register my ALM Client from the ... \ qcbin "Tools" page in ALM 16.01, I now see 32 and 64-bit options to run it. What is the difference? I know my OS (Windows) is 64-bit, so why would I need to install one or the other?