Select about then change product key or upgrade your edition of windows.
How to update windows 10 pro without product key.
Paste or type your windows 10 pro product key and click next to start the upgrade process from windows 10 home to pro.
Once you have your windows 10 key ready select system.
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.
Enter your product key for the edition you are upgrading to whether it is pro or enterprise and wait while the product key verified.
It ll keep working for the foreseeable future with only a few small cosmetic restrictions.
A unique product key is used to ensure the a single licensed copy of windows isn t being used on more than are allowed.
Upgrade from windows 10 home to pro via a license key digital license.
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.
You ll need it to replace your current license key.
Click yes if user account control comes up.
Without the product you shall not be able to run your os in a proper executable way.
But if you don t possess the product key for windows 10 specifically anyhow you can follow the methods mentioned above in the article to activate.
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.
Windows 10 requires activation to verify you re running a genuine copy.
Product key or license key is a very important part of the os service while purchasing or downloading the os.
From your windows 10 home running version 1511 enter the windows 10 pro default key under change product key.
Microsoft allows anyone to download windows 10 for free and install it without a product key.
If the key is valid your pc will now restart to complete the upgrade.