All my machines are active . I am talking about product Id numbers. A friend of mine tried to install windows 10 but because he didn't have a new product Id numbers he couldn't activate windows 10....

Thanks for the advice but if I do that will I get three new licence numbers? I just want to upgrade from windows 7 to windows 10 and get three new licence numbers for my computers. Where do I go to...

I have a similar problem. I have 3 computers with windows 7 ultimate. One computer asked me if I wanted to update the other 2 are standing silently alone. I have KB2952664 and KB3035583 on both...