For info about how to activate Windows 10, see Activation in Windows 10.
Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow.
A Windows product key is a 25-character code used to activate Windows 7 or Windows 8.1. It looks like this:
PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
Without a product key, you won’t be able to activate your device.
Your product key should be in the confirmation email you received after buying Windows, included with the packaging that came with your PC, or on the Certificate of Authenticity (COA) attached to the back or bottom of your PC.
For more info about Windows product keys and where to find them for the copy of Windows that’s on your PC, see Find your Windows product key.
You can find usefull tools that can help you to find your old license than you will be able to know if is a genuine license key. Just check our Download Section
DELIVERY FOR MICROSOFT PRODUCT KEYS
*Product keys are emailed out within 5 minutes of purchase if ordered between 8:00 am – 9:59 pm Eastern Time, 7 Days a week, 365 days a year.
Please give up to 30 minutes if you have not received your email with the product code and instructions.
We always send 2 emails to make sure you have received our email in your inbox. If 30 minutes have passed since the time of purchase, and you have not received your product keys, please email us at [email protected] with your name or order number, and we will reply right away to your email with your product code and instructions.
WORLDWIDE PURCHASE – OK
Refunds – 30 Days