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).

Anything which is Internet-facing, tends to "age" like that.

Breakage is understandable.

At one time, we could have a protocol like FTP, and it
"just worked". Someone figured out this was "too easy"...
And the rest is history.

Paul