I have Windows 8 Pro.I am trying to download Windows Media Center with a genuine product key as an add on pack but during downloading it asks me to activate Windows which is already been activated.I can not personalize my settings as all are greyed out.
Press Windows key + X then click Run, then type: slui.exe 4 press the Enter Key
Select your country from the list
Choose the ‘Phone Activation’ option.
Do not select any option or do not press any button for the same.
Talk to the Support person regarding your problem.