if i change the product key will i lose everything on my computer? Changing your Windows Product Key does not affect your personal files, installed applications and settings. Enter the new product key and click Next and follow the on screen instructions to activate over the Internet.

Does activating Windows do anything?

Activation ensures that the software is obtained from and licensed by Microsoft. KMS is used by volume license customers, usually medium to large businesses, schools, and non-profits. Individual computers do not need to contact Microsoft, although the KMS server does.

How can I activate Windows without losing data?

Activating Windows 10 will not affect the availability of data and files on your PC. To activate Windows 10, you need a digital license or a product key. If Windows 10 was previously activated on your device, your Windows 10 should be activated automatically.