Very recently I have observed that after upgrading to Windows 8 Pro,the Windows Media Center product keys are not working for many users.They goy frustrated and thought there might be something wrong with the product keys and requested for another set through different email ids.Remember Windows Media Center Product keys are available up to 31st January,2013 -and it’s free upgrade for Windows 8 Pro.
So where lies the confusion?Look at the following:-
So from the above it’s clear that just upgrade to Windows 8 Pro from XP SP3,Windows Vista or Windows 7 may not include Windows Media Center.
2nd option is getting Windows 8 Pro Pack which includes Windows Media Center.It requires PCs running Windows 8.
And finally adding Windows Media Center.It requires PCs running Windows 8 Pro