it might well be that you still have windows defender active, i just upgraded to win 10 from 7 using the upgrade keeping files and program option, all went well until i opened live, this license is not compatible with this version of live, simple to fix just create a new auth file from keygen, sorted, then i opened omni, trillian and rmx and the challenge code screen came up but with the words error in the box, shit i thought, even the standalone versions did the same, how to fix it? simple for some reason you have to run live as admin or the standalone to be able to see the challenge code, running as admin on win 7 made no difference maybe its microsoft trying to prevent people using crack software, who knows,