In the event that you attempted to introduce a 64-bit or 32-bit rendition of Office 2016, Office 2013, or an Office independent application, for example, Visio on a PC that as of now has either the 32-bit or 64-bit variant of Office, you could see one of the accompanying blunder messages.
This happens in light of the fact that you can’t blend 64-bit and 32-bit renditions of Microsoft Office.
To fix this error and switch from 32-bit to 64-bit, you must first uninstall the 32-bit version and then install the 64-bit version.
Likewise, to switch from 64-bit to 32-bit, you need to uninstall the 64-bit version and then install the 32-bit version.
For overall guidance about which version to office install, see Choose the 32-bit or 64-bit version of Office. If you’re not sure which bit version you may have already installed, see What version of Office am I using?
Step 1: Uninstall Office
Uninstall the version of Office (or stand-alone Office application, such as Visio or Project) you don’t want. Follow the steps in Uninstall Office from a PC.
Step 2: Install the 32-bit or 64-bit version of Office
for more details, visit : office.com/setup