On Sat, 9 May 2020 11:07:06 +0100, Ian Jackson
wrote:

All of my favourite (and not-so favourite) Youtube downloaders no longer
work on this XP machine.

Has anyone else got the same problem - or is it just me? Do I have to
resort to a newly-acquired elderly machine running W10? 4K Video
Downloader certainly does work on W10 - but later versions won't install
on XP, and older versions install but don't work).

3D YouTube Downloader's current version (1.19.3 beta) still works fine
with XP... the author updates it reguarly too.

https://yd.3dyd.com/download/