Reactivation Windows

Question

Reactivation Windows

Vincent 0

Hello,

To play MW4, I needed to upgrade my BIOS, do something with secure boot, tpm.
Now I can play MW4 but, my windows is unfortunately not Activated.

I tried to put the Windows 10 Pro key that I bought (It's now upgraded to Windows 11 Pro) but it doesn't work. I tried to contact a human by phone support but the bot doesn't let me reach the human..
I need help to get Windows back please.

Best regards,

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2 answers

Your answer

Answer 1

Horace Wiggins 535

https://support.microsoft.com/en-US/Windows/activation/activate-windows

0 comments

Answer 2

DaveM121 939.5K Independent Advisor

1

A BIOS update may cause the hardware ID. of the processor or motherboard to change, that causes the activation servers to think you have changed your PC.

Open the Settings App, go to System - Activation.

Click the Troubleshoot button and select 'I changed my hardware'.

On the resulting list, do you see your PC licensed to select that to reactivate Windows?

2

If that does not resolve the problem.

A
Click your Start Button, type cmd then right click Command Prompt and choose 'Run as Administrator'

Run or paste this command and hit Enter:

slmgr.vbs /dlv

Please post a screenshot of the resulting dialog

B

Download the free ShowKeyPlus app from the Microsoft Store.

On the left of that app, click 'Check Edition', then enter your product key into that app.

Please provide a screenshot of that app window and please hide your product key in the screenshot.

Vincent 0 Reputation points

2026-09-02T11:55:32.8266667+00:00
2.B.

2.A

Thank you for your help !

It doesn't work, "We cannot find a device linked to your Microsoft account that can be used to reactivate the device you are currently using. Make sure you are signed in with the Microsoft account linked to the Windows 10 digital license on this device, or try again later."

And above is the screenshot I got from the command and ShowkeyPLus
DaveM121 939.5K Reputation points Independent Advisor

2026-09-02T12:04:26.3066667+00:00

Thank you for the screenshots, there is no problem indicated with your licence, if the troubleshoot method is not working to reactivate your licence, this forum is just a user to user forum, you will need to contact Microsoft support directly to ask them to reactivate your licence, that is the only option, if you are unable to find a working phone number to contact them, open the get help app in Windows and continually ask the bot in that app to 'speak to a person', you may eventually get a link to speak to their support via live chat support.
Vincent 0 Reputation points

2026-09-02T12:06:58.0333333+00:00

Thank you very much for your help, I'll try to reach a human support !
DaveM121 939.5K Reputation points Independent Advisor

2026-09-02T12:08:06.1166667+00:00

Glad to help!
Vincent 0 Reputation points

2026-09-02T13:26:07.29+00:00

I reached a support microsoft and he said my key is kinda blocked for some reasons and they can't do anything and I can just contact my key seller (from 7 years ago).
To sum up, he said : Good Luck ! :(
DaveM121 939.5K Reputation points Independent Advisor

2026-09-02T13:28:45.9633333+00:00

Okay, I am sorry to hear that, but if that is what they indicated, there is no other option available.
Neil D 34,460 Reputation points Volunteer Moderator

2026-09-02T14:23:47.06+00:00

@Vincent if you bought just a product key particularly if it was at a low price they are probably selling the same key to others and so it has been blocked.

Unfortunately the seller is the one for support, Microsoft only support a licence they sell at the full price.