Can I Activate Windows 10 With Windows 7 Key
For the first year (until July 2016), Microsoft offered a completely free upgrade from Windows 7 and 8.1 to Windows 10. This was a strategic move to unify the Windows ecosystem. During this period, the activation mechanism was straightforward: if you had a legitimate Windows 7 license, the Windows 10 installer would accept it, validate it, and convert it into a "Digital Entitlement" linked to the hardware ID of your machine.
Go to Settings > Update & Security > Activation and select Troubleshoot . can i activate windows 10 with windows 7 key