During the installation on a 64-bit Windows PC/Server, you have the choice between the 32-bit or the 64-bit version of Launcher Office.
Choose
the same version than the Microsoft Office one.
If you use the 32-bit Microsoft Office product, therefore install the 32-bit
version of Launcher Office.
If you use the 64-bit Microsoft Office product, therefore install the 64-bit version of Launcher Office.
Otherwise, if you use the mail option with Lotus Notes, therefore it is mandatory to install the 32-bit version of Launcher Office.