How to tell if you have 32-bit or 64-bit Outlook installed

To tell if you have the 32-bit or 64 bit version of the outlook add-in installed do the following

  1. In Outlook choose ‘File’ from the top menu bar (it should be all the way to the left)

2. Select ‘Office Account’ from the left menu

3. Click on the ‘About Outlook Button’

4. The ‘About Microsoft’ dialog will show whether you have the 32-bit or 64-bit version of Outlook Installed

Simply select the installer that matches the Outlook you have installed.