Well i have now managed to sort out the problems i have been having with Sky go on windows 10, in case other users are reading this, the issue i had was explorer kept freezing when i tried to login on the login page. Microsoft edge browser is not compatible with sky go so they (windows) recommend using explorer.
In fairenss to sky, they got back to me today and recommended using mozilla firefox instead. chrome does not work either btw. anyway, i installed firefox, but crutially you need to select the option not to copy data across form other browsers as it could copy the setting which is preventing use across too.
Anyway firefox works a treat, better than explorer ever did, so i'm back to a happy camper again watching go on windows 10 through my HDMI output on my TV upstairs, hope others might get some useful info out of this too.