Cleaning out a non-working VFP installation on Windows 10

I have a desktop and a laptop with non-functioning installations of VFP9. I am thinking that I should remove any previous versions before doing a new installation but the recommended method to do so involves having Windows do the uninstal. The Apps list on these machines no longer includes VFP9 so that method is not an option.

I did delete the C:\Program Files(x86\Microsoft Visual Foxpro 9.0 folder

Is it essential to clean up all files and registry entries or will the new installation simply overwrite any entries already there?

Thanks in advance, Joe

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