What should I do if win10 fails to activate?

A friend upgraded to win10 activation failed when activated, what is the reason? How to solve? Today, the script house Xiaobian will bring you win10 activation unsuccessful solution. Interested friends can take a look together.
If you don't activate Win10, you can only use some of Win10's features.


Well, only to find that Win10 can not be activated if you are after a new installed Win10, then do not impulsive, try again another time activation, can usually be successful if still unsuccessful, is not Is the latest Win10 internal version of the free activation key wrong?