If you need to switch from a 64-bit to a 32-bit version of Office. Ghost Apps:
When a previous version of Microsoft 365, Office 2021, or Office 2019 refuses to budge, running this utility strips out stubborn files. This allows a clean reinstall without throwing installation errors. Microsoft Support and Recovery Assistant - Troy Helpdesk setupprod-expexp.exe
: To remove all existing Office installations, registry keys, and residual files that might interfere with a new setup. If you need to switch from a 64-bit