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Windows 10 Product ID Changed, So Invalid Product Key .?


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Hello..

I did a windows 10 reinstall on my Thinkpad Laptop after upgrading it to Windows 10 Home 20H2 (Build 19042.685). I did it previously, and my windows got activated automatically, but this time its not..

I logged in with same Microsoft Account as previously, but its not activated this time..

I got the Genuine Windows with the laptop only when i bought it...

Before reinstalling i took backup of my laptop credentials with a tool..

now i noticed that my Product ID is different then of the details i have in backup text file..

I am afraid to ask, Is it possible that Product ID is changed. ?? (becoz as far i knw, its the hardware ID).

Please guide on how to reactivate my windows..

Rajat Jain

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