Reset Windows Activation Remove License Key -

Delete value: BackupProductKeyDefault

# Remove the product key cscript /nologo slmgr.vbs /upk cscript /nologo slmgr.vbs /cpky Reset activation state cscript /nologo slmgr.vbs /rearm

Removing a license key is a clean way to reset activation problems or prepare a PC for a new owner. Always ensure you have a valid key ready for re-activation when needed.