How to uninstall Libre Office when version misidentifies as

I am running Windows 10 and long ago installed LO

Later I had to upgrade to LO


Now that I want to install LO 6.1.4, the installer for that tries to run the uninstall for LO which no longer exists on my computer rather than the one for which is on my computer.


How can I remove 5 and install 6?

See this FAQ. Specifically in this case, a part about troubleshooting program from Microsoft would fit; but also you may find a section talking about where to find all older installers.