Windows 10 Pro Deactivates After Installing win10 20H2 Update

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AndrewDeadman

Hi teamI have an on going headache with activating Win 10 pro on my laptop (HP Compaq 8510P).Orginally running Windows Vista Business I choose to do a fresh in install of Win 10 Pro 64bit (After checking that my laptop could handle & it could)So I did & successfully activated Win 10. Since then, I upgraded the 160GB HDD to a 240GB SDD, reloaded & activated, Win 10 successfully.Since the orginal install the 20H2 update, my copy of Win 10 will not activate saying I do not have a valid product code - 0xC004C003.So why would Windows activate successfully before the

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