Tried traditional Windows install / uninstall, registry cleaners, 3rd party tools, etc. Here is an official uninstaller / clean up tool from OEM which has worked perfectly for me:
Support page: https://scansnap-faq.pfu.ricoh.com/hc/en-us/articles/13199922663065-I-cannot-install-ScanSnap-Home
Download Tool: https://origin.pfultd.com/downloads/ss/sshinst/w-tool/SSHomeClean.exe