Windows 10: activation invalid after deletion of product key

For
Code:

the product ID was deleted.
The operating system was Windows 7 or 8 factory installed (upgrade/ downgrade rights) and was upgraded to windows 10 during the free upgrade period.

The computer should have licensing information on Microsoft servers.
There is a Microsoft account.

The activation diagnostic tool after deletion of the product ID displayed invalid license.
The V2 log collector, last ran on 9/21 displayed ActivePartialProductKey : 3V66T

System currently displays:
Windows is not activated.
Product ID: Not available

The computer needs to be troubleshooted for Windows upgrade failure.

None of these commands worked after the run of the upk command.
Code:

Shouldn't a clean install if required be able to be performed having upgraded to Windows 10?
Would reset save files and custom install be other options in case troubleshooting steps fail?
What significance if any is the loss of the product key followed by invalid license?
What fixes are available contacting Microsoft global support?
Does a system restore typically restore the product ID?

:)

 

ACTIVATION KEY INVALID

win 10 stopped working after restart - all the steps and possibilities but continued saying there was a problem - had to reinstall from usb but now have the invalid activation key message - (using the key from system 7)

Tried command prompt solutions from forum - nothing works

please help

 

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.