As soon as I signed into Youtube with my Google account it started failing again.
ZPADWIC
I already wrote that three days ago:
SF + YT don't work anymore if logged-in ..
.. so no Videos with DRM or age-restriction works anymore.
Video dl works (for me) only if not logged in
if logged-in always only Audio (or video fails)
Germania
That's exactly why I hate the fact that searching and reading has gone out of fashion ..
.. and everyone thinks they have to create a new topic about a known problem !