So I also had the problem with the greyed out download button, but I updated my build to 1511 and installed all available updates afterwards.
I was kinda happy to see that the button now wasnt greyed out but after 2 secs it said Try again. Error 0x80240024.
Then I tried all the fixes I could find for this problem and none of them worked.
Does anybody have a solution to this?
regards panande