trying older version of flash: http://download.macromedia.com/pub/flashplayer/installers/archive/fp_11.9.900.170_archive.zip -> flashplayer11_9r900_170_winax.msi -> this actually worked straight away.
it’s understandable that m$ wants flash under it’s control – rolling it by themselves to mobile and desktop.
seems like the „rolling for desktop“ is not working yet. this guide only works for desktop.
if you have problems with flash on mobile… call m$. (don’t ask me for the number… i am not the senior gold member)