Windows 10: Two Computers Activated With The Same Product Key

I upgraded mine from Windows 10 Home, to Windows 10 Pro. Windows was oringally installed as fresh on both computers.

Bother computers had their own product key.
I have two Windows 7 Ultimate key, which I used to upgrade my Windows 10.

Yesterday, while working on my Sister's and her husband's computer, I decided to give them an upgrade, and chose the Windows 7 Ultimate one, to see what'll happen. It worked.

Weird thing is, the product key I used, is changed (not the same as the one I entered), probably becuase there is no Ultimate version of Windows 10.
A even weirder thing is, both computers have the same product key. My computer was off when the other computer was being activated. When I get home, I expected and activation issue on my computer, but so far none.

I tried to change the Windows 10 product key to another Win10 Pro, but when I use ProduKey, it still shows the same key.

:)

 

Activate windows 10 after re-installing (I have lost my product key)

I own a Lenovo T430 laptop. In 2017, I installed Windows 10 using my original Windows 7 product key. Unfortunately, I cannot find that product key anymore. I need to re-install windows 10. Will it be automatically activated after the installation, if I skip the step of asking the product key during the installation?

In my opinion, I believe that my laptop will have a digital entitlement stored on the Microsoft Activation Servers and this will not be a problem. Is that true?

If not, please suggest me a solution or a workaround.

 

Product key

Hi Megan,

A product key is used when activating a software.
To help us determine the appropriate troubleshooting steps that can resolve your concern, we'd like to ask the following questions:

• What product are you trying to activate?
• Are you looking for the product key to activate your Office application?
• Which version of Office are you trying to activate? To check this, you can perform the steps posted on this
  link.
• Are you looking for the product key to activate your Windows?

We look forward to your response.

 

Windows 10 upgrade activation product key requirement no skip

Hi Anil,

To quote Andre's post, can you please try the following steps as well right after you got the product key from the steps that was provided to you above.

• Click Start
• Settings
• Find Update & Security
• On the left pane of the page, click Activation
• In the change the product key section, enter the product key you have
• Click Next to activate.

Let us know how it goes so we can provide you with a better solution.