Uninstall old versions of Flash on Windows 10

I know what you’re thinking. Yes, I’m aware that Flash is built into IE and Chrome these days,

so I can’t remove Flash without removing those. This is a different issue.

Because I had a Flash Player 32 ActiveX and NPAPI (varying minor releases) installed on many Windows 7 computers.

We have now upgraded those computers to Windows 10 (in-place upgrade). All the software stayed on the computers using our upgrade methods.
Including the old Flash versions.

Now, when I try to uninstall the old, unnecessary, security risk versions of Flash ActiveX, they won’t uninstall.

The uninstaller is the installer, and the uninstaller won’t work because “Your Microsoft Internet Explorer browser includes the latest version of the Adobe Flash Player built-in.”

So I’m stuck in a catch-22. I can’t uninstall old versions because those old versions can’t be installed on Windows 10.

Has anybody had any experience with this? Is there a way to trick the uninstaller into thinking we’re still on
Windows 7?

Thanks, Adobe & Microsoft!