Windows 10 requires activation to verify you re running a genuine copy.
How to update windows 10 pro product key.
For example this script in microsoft s technet gallery works differently but also grabs output from digitalproductid in the registry.
A unique product key is used to ensure the a single licensed copy of windows isn t being used on more than are allowed.
If you do have a copy of windows 10 pro or maybe you found a retail copy of the upgrade for less than microsoft charges you ll have a product key alternately called a license key that enables windows 10 pro.
From your windows 10 home running version 1511 enter the windows 10 pro default key under change product key.
To upgrade from windows 10 home to windows 10 pro and activate your device you ll need a valid product key or a digital license for windows 10 pro.
Windows will be triggered after confirmation from microsoft servers across the net.
But if you have a product key for windows 10 pro windows 7 professional or ultimate or windows 8 8 1 pro you can click the change product key button and enter that 25 character key here.
For more info about how to keep your pc updated see windows update.
Upgrade from windows 10 home to pro via a license key digital license.
A windows 10 change product key dialog will look.
Once you have your windows 10 key ready select system.
Select about then change product key or upgrade your edition of windows.
Here s the key you ll need to enter for windows 10 enterprise.
You ll need it to replace your current license key.
Enter your product key for the edition you are upgrading to whether it is pro or enterprise and wait while the product key verified.
The above microsoft web page lists keys for other editions of windows 10 so you could instead convert to windows 10 professional windows 10 education windows 10 enterprise 2015 ltsb long term servicing branch and other editions of windows 10.
On the microsoft community forums charles of microsoft says.
How to upgrade to windows 10.
Input the new windows 10 product key and press ok.
Click yes if user account control comes up.